Extended Distributive Property: Complete the missing number

To solve this problem, we will follow these steps:

• Expand $(x+a)(x+b)$. This gives: $x^2 + (a+b)x + ab$.
• Compare with the quadratic equation $x^2 - 3x - 40$.
• Equate coefficients:

Now, work through each step:
1. The expanded form of $(x+a)(x+b)$ gives $x^2 + (a+b)x + ab$.
2. Comparing with $x^2 - 3x - 40$, we get two equations:
$a + b = -3$ (coefficient of $x$) and $ab = -40$ (constant term).

3. We need two numbers whose sum is $-3$ and product is $-40$.
4. Upon inspection, the numbers that satisfy these conditions are $a = 5$ and $b = -8$, since $5 + (-8) = -3$ and $5 \times (-8) = -40$.

Therefore, substituting $a$ and $b$ into the expression, the factorization of the quadratic is $(x+5)(x-8)$.

Thus, the solution to the problem is $\left( x + 5 \right) \left( x - 8 \right)$.

To solve this problem, we'll follow these steps:

• Step 1: Determine two numbers whose product is $-12$ (the constant term) and whose sum is $1$ (the coefficient of $x$).
• Step 2: Verify these numbers are $-3$ and $4$. Since $(-3) \times 4 = -12$ and $(-3) + 4 = 1$, both conditions are met.
• Step 3: Substitute these numbers into the expression $(x-?)(x+?)$ to get $(x-3)(x+4)$.
• Step 4: Double-check the factorization by expanding $(x-3)(x+4)$ to ensure it results in $x^2 + x - 12$.

Therefore, the factorized form of the given quadratic polynomial is $(x-3)(x+4)$.

To solve this problem, we'll follow these steps:

• Step 1: Identify the pattern of factoring quadratics.
• Step 2: Use the sum and product relation to find the numbers.
• Step 3: Confirm the binomial expressions.

Let's work through each step:

Step 1: Our task is to factor the expression $x^2 + 7x + 10$. We need two numbers whose product is $10$ (the constant term) and whose sum is $7$ (the coefficient of $x$).

Step 2: We list pairs of numbers that multiply to $10$:
- $1 \times 10$
- $2 \times 5$

Among these, only the pair $2$ and $5$ add up to $7$. Therefore, the expressions needed are $(x+2)$ and $(x+5)$.

Step 3: We substitute these values into the binomials: $(x+5)(x+2)$. Expanding this verifies:
$(x+5)(x+2) = x^2 + 2x + 5x + 10 = x^2 + 7x + 10$.

Therefore, the factorization is correct, and the solution reached is $\left(x+5\right)\left(x+2\right)$.

Therefore, the solution to the problem is $\left(x+5\right)\left(x+2\right)$.

To find the missing element in the expression $(a+4)(?+b) = ac+ab+4c+4b$, we will use the distributive property to find $?$.

Step 1: Let $(a+4)$ be the first factor, and assume $(?+b)$ is $(y+b)$, where $y$ is the unknown we are trying to find.
$(a+4)(y+b) = ay + ab + 4y + 4b$

Step 2: We know from the equation given that this should equal $ac+ab+4c+4b$.
Compare both expressions:
$ay + ab + 4y + 4b = ac + ab + 4c + 4b$

Step 3: Match terms from both equations. On the left side, terms are $ay + ab + 4y + 4b$:
- The term $ab$ on the left matches with $ab$ on the right.
- The term $4b$ on the left matches with $4b$ on the right.

Step 4: Remaining terms are $ay + 4y$ on the left and $ac+4c$ on the right. For these to match:
$ay = ac \quad (\text{This implies}~y = c )$
$4y = 4c \quad (\text{This further confirms}~ y = c)$

Therefore, the missing element is $y = c$ which matches choice ID "1": $c$.

To tackle this problem, we'll expand $(a + b)(4 + a)$ using the distributive property, compare it with the given quadratic equation $a^2 + 7a + 12$, and solve for the missing value $b$.

Step 1: Expand the expression $(a + b)(4 + a)$.

Applying the distributive property, we obtain:

$(a + b)(4 + a) = a(4 + a) + b(4 + a) = 4a + a^2 + 4b + ab$.

This simplifies to:

$a^2 + (4 + b)a + 4b$.

Step 2: Compare the expanded expression with $a^2 + 7a + 12$.

From the equation $a^2 + (4 + b)a + 4b = a^2 + 7a + 12$, equate the coefficients and constant term:

• For $a$: $4 + b = 7$
• For constant term: $4b = 12$

Step 3: Solve the equations.

• Solving $4 + b = 7$ yields $b = 3$.
• Additionally, $4b = 12$ also yields $b = 3$, confirming consistency.

Since both the conditions lead to $b = 3$, we verify the calculations.

Therefore, the missing number is $3$.

To solve this problem, we'll follow these steps:

• Step 1: Use the distributive property to expand $(a+2)(ma+5)$.
• Step 2: Match the expanded polynomial to $2a^2 + 9a + 10$.
• Step 3: Solve for the unknown coefficient $m$.

Now, let's work through each step:

Step 1: Apply the distributive property.
The expression $(a+2)(ma+5)$ becomes:
$(a)(ma) + (a)(5) + (2)(ma) + (2)(5)$
This simplifies to:
$ama + 5a + 2ma + 10$

Step 2: We combine like terms:
The polynomial becomes $(m+2)a^2 + (5+2m)a + 10$.

Step 3: Compare it with $2a^2 + 9a + 10$:
For the $a^2$ terms, set $m+2 = 2$. Solving for $m$, we get $m = 2 - 2 = 0$. This seems incorrect; correct mistake:
Recompute: Actually, setting $(m+2)a^2 = 2a^2$ gives $m + 2 = 2$. Thus, $m = 2 - 2 = -0$. Oops, didn't need, re-evaluate: $m=2$ actually.
For the $a$ terms, set $5+2m = 9$. Solving for $m$, $2m = 4$ so $m = 2$.
Check decision points: Corrections.

The calculation reconfirms:
$(m+2)a^2 + (5+2m)a + 10 = 2a^2 + 9a + 10$ holds with $m=2$.

Therefore, the missing number is $2$.

To solve this problem, we'll approach it by expanding and comparing terms:

• Step 1: Apply the distributive property (FOIL method) to expand $(a+?)(a+3)$.
• Step 2: Compare each term in the expansion with the corresponding term in $a^2 + 3a + 2ab + 6b$.
• Step 3: Identify and solve for the missing element.

Let's execute these steps:

Step 1: Consider the expression $(a+ b)(a+3)$.

Using distributive property, it expands to:
$(a + b) \times (a + 3) = a \times a + a \times 3 + b \times a + b \times 3$.

This gives us:
$= a^2 + 3a + ab + 3b$.

Step 2: Now, compare this expansion to the given expression $a^2 + 3a + 2ab + 6b$.

Step 3: From the comparison, we have:
- $a^2$ terms match.
- $3a$ terms match.
- For the $ab$ term, $ab$ should match $2ab$, implying $b = 2b$. Therefore, the missing term must contribute an additional $b$, making it $b + ab = 2ab$. Thus, $b = 2$.
- For the constant term, $3b = 6b$, leading to the same conclusion.

Therefore, the solution to the problem is $2b$.

To solve this problem, we'll proceed as follows:

• Step 1: Expand the left side of the equation using the distributive property.
• Step 2: Compare the expanded expression with the right side.
• Step 3: Solve for the missing number to make the expressions equal.

Now, let's work through these steps:
Step 1: Apply the distributive property to expand $(3x + 4)(5 + ?)$:
$(3x + 4)(5 + ?) = 3x(5 + ?) + 4(5 + ?)$.
Expanding each term, we get:
$= 3x \cdot 5 + 3x \cdot ? + 4 \cdot 5 + 4 \cdot ?$,
which simplifies to $15x + 3x? + 20 + 4?$.

Step 2: Compare this with the right side, $15x + 3xy + 4y + 20$.

Step 3: By comparing terms, note:
- $15x$ matches on both sides.
- $20$ matches on both sides.
- $3x? = 3xy$ implies that $? = y$.
- $4? = 4y$ confirms $? = y$.

Therefore, the correct missing number that should replace the question mark is $\boxed{y}$.

To solve the problem, we'll follow these steps:

• Step 1: Identify and expand the given expression, $(-5+2y)(y-k)$.
• Step 2: Equate it to the provided polynomial $2y^2 - 9y + 10$ and match coefficients.
• Step 3: Solve for $k$.

Let's carry out these steps in detail:

Step 1: Expand $(-5+2y)(y-k)$. Use distributive property:
$(-5+2y)(y-k) = -5(y-k) + 2y(y-k)$.

This results in the following steps:
$-5(y-k) = -5y + 5k$
$2y(y-k) = 2y^2 - 2yk$

Combining these gives:
$-5y + 5k + 2y^2 - 2yk$.

Step 2: Equate this expression to the given polynomial $2y^2 - 9y + 10$:
$2y^2 - 2yk - 5y + 5k = 2y^2 - 9y + 10$.

Step 3: From this, match the coefficients from both the polynomials:

• The coefficient of $y^2$ is already matched as both are 2.
• The coefficient of $y$: $-2k - 5 = -9$.

Solve for $k$:

$-2k - 5 = -9$

$-2k = -9 + 5$

$-2k = -4$

$k = 2$

Therefore, the missing number k is $\mathbf{2}$.

To solve this problem, we'll apply the distributive property to expand and match the expressions:

• Step 1: Expand $(m+n)(4+?)$ using distributive property: $(m+n)(4+n) = m(4+n) + n(4+n)$.
• Step 2: This gives us $4m + mn + 4n + n^2$.
• Step 3: Compare this to the expression $n^2 + mn + 4m + 4n$.

The expanded expression matches the target expression, so the missing term in $(m+n)(4+?)$ is indeed $n$.

Therefore, the complete expression is $(m+n)(4+n)$.

To solve for the missing element, we'll employ the distributive property as follows:

1. Let's expand $(-4-y)(-2x-?)$:

• Multiply $-4$ by $-2x$: $-4 \times -2x = 8x$.
• Multiply $-4$ by the unknown: $-4 \times ? = -4?$.
• Multiply $-y$ by $-2x$: $-y \times -2x = 2xy$.
• Multiply $-y$ by the unknown: $-y \times ? = -y?$.

2. Combine these results to form the expression:

3. Compare this expression with the target expression $8x - 16 - 4y + 2xy$:

• We already have $8x$ and $2xy$ matching, so we're left to make the terms $-4?$ and $-y?$ match $-16$ and $-4y$ respectively.

4. From $-4? = -16$, we solve for $?$:

Thus, the missing number $-4$ is needed to get the resulting expression to match.

Therefore, the missing element is $\boxed{-4}$.

To solve this problem, we'll follow these steps:

• Step 1: Expand the binomial expression using the distributive property.
• Step 2: Compare the resulting polynomial's coefficients with the given expression's coefficients.
• Step 3: Solve for the missing element.

Now, let's work through each step:
Step 1: Express $(3x-8)(-4+?)$ using the distributive property:
$(3x)(-4) + (3x)(?) - (8)(-4) - (8)(?)$.
This simplifies to: $-12x + 3x(?) + 32 - 8(?)$.

Step 2: Compare with $-3x^2 - 4x + 32$, equaling terms by degree:
- The constant term (32) already matches.
- The $x$ term is $-12x + 3x(?) = -4x$.
- The $x^2$ term arises from $3x(?)$.

Step 3: Solve for the missing element by aligning coefficients:
$3x(?) = -3x^2$, therefore $? = -x$.
Thus, the missing element is $-x$.

Therefore, the solution to the problem is $-x$, which corresponds to choice 2.

To solve the problem, we will expand $(x-4y)(2x+?)$ using the distributive property and match it to the given polynomial:

First, expand the expression:
$(x-4y)(2x+?) = x(2x+?) - 4y(2x+?)$

Upon expanding, we get:
$= x \cdot 2x + x \cdot ? - 4y \cdot 2x - 4y \cdot ?$ $= 2x^2 + x \cdot ? - 8xy - 4y \times ?$

We equate the expanded expression to the given polynomial $2x^2 - 8xy - 12y + 3$:
$2x^2 + x \times ? - 8xy - 4y \times ? = 2x^2 - 8xy - 12y + 3$

By matching terms, we see:
1. The $x \cdot ?$ + $-4y \cdot ?$ needs to compensate for $-12y$ and the constant 3.
2. Equate negative constant and remaining components:
$-4y \times ? = -12y$ Therefore, $? = \frac{-12y + 3}{-4y} = 3$.

After calculation, the missing number aligns with the given polynomial. Therefore, the missing number is:

$3$.

To solve the problem, we'll follow these steps:

• Step 1: Expand the expression $(a + ?)(-2a + 4)$ using the distributive property.
• Step 2: Equate the resulting expression with the given form $-2a^2 - 20a + 48$.
• Step 3: Solve for the missing '?' that satisfies the equation.

Step 1: Expand the original expression:

$(a + ?)(-2a + 4) = a(-2a) + a(4) + ?(-2a) + ?(4)$

Expanding gives us:

$-2a^2 + 4a - 2a? + 4?$

Step 2: Equate this with the provided expanded form $-2a^2 - 20a + 48$:

$-2a^2 + 4a - 2a? + 4? = -2a^2 - 20a + 48$

Step 3: Match the coefficients:

• Compare the linear terms $4a - 2a?$ with $-20a$:
• $4 - 2? = -20$ implies $4 = -20 + 2?$
• Solve for $?$:
• $2? = 24$ gives $? = 12$

The missing element is $12$.

To solve this problem, we’ll follow these steps:

• Step 1: Expand the given expression using distributive property.
• Step 2: Match each term to the provided expression.
• Step 3: Solve for the missing element.

Firstly, we need to expand the left side of the equation $(x+2)(k-4)$:

Applying the distributive property:
$(x+2)(k-4) = x(k-4) + 2(k-4)$.
Continue expanding:
$= xk - 4x + 2k - 8$.

Now, compare the simplified left hand expression $xk - 4x + 2k - 8$ with the right side of the given equation $a + 2\frac{a}{x} - 4x - 8$.

By matching terms:

• Coefficients of $-4x$ and $-8$ are already matching.
• The term $xk + 2k$ must equal $a + 2\frac{a}{x}$.

To create the term $2\frac{a}{x}$, we deduce that the missing value $k$ for $xk$ must be $\frac{a}{x}$, because substituting $\frac{a}{x}$ results in terms becoming $a$ and $2\frac{a}{x}$.

Therefore, the solution for the missing element is $\frac{a}{x}$.

To solve this problem, we'll follow these steps:

• Step 1: Expand the expression $(x+?)(x-8)$.
• Step 2: Compare the expanded expression to the given quadratic expression.
• Step 3: Determine the missing term by matching coefficients.

Now, let's work through each step:

Step 1: Write the left expression as $(x+b)(x-8) = x^2 - 8x + bx - 8b$.

Step 2: Compare the expanded form, $x^2 + (b-8)x - 8b$, to the given $x^2 - 5x - 24$.

Step 3: We see that the coefficients for $x$ should match, so we have $b-8 = -5$. Solving for $b$, we get:

• $b - 8 = -5 \rightarrow b = -5 + 8 \rightarrow b = 3$.

Optionally, verify by comparing the constant terms: $-8b = -24 \rightarrow b = 3$.

Therefore, the missing element in the binomial is $\boxed{3}$.

Let's solve this problem step by step.

Step 1: Apply the distributive property to the left-hand side.
The expression $(2a+b)(3b-?)$ expands to:

Step 2: Distribute each term:

• First $2a(3b)$ gives $6ab$.
• Then $2a(-?)$ gives $-2a\cdot?$.
• Next $b(3b)$ gives $3b^2$.
• Finally $b(-?)$ gives $-b\cdot?$.

In equation form:

Now, compare this with the given equation: $6ab + 5a + 2b$.

Notice that $3b^2$ doesn't present on the right-hand side, indicating no term in $b^2$ should exist. Moreover, right-hand terms $5a$ and $2b$ have no zero counterparts on complex variables (polynomial formation), indicating inconsistencies in all forms with possible simple polynomial inequivalence.

Step 3: Analysis shows inability to correlate purely intuitively with missing match coefficients specifically implies an inadequacy here in probabilistic assumptions, leading us to:

Therefore, the solution to the problem with the provided options is No adequate solution.