Fill in the missing number
Fill in the missing number
\( a^2+7a+12=(a+?)(4+a) \)
Fill in the missing number
\( (a+2)(?a+5)=2a^2+9a+10 \)
Complete the missing element
\( (a+?)(a+3)=a^2+3a+2ab+6b \)
Fill in the missing number
\( (3x+4)(5+?)=15x+3xy+4y+20 \)
Fill in the missing number
\( (-5+2y)(y-?)=2y^2-9y+10 \)
Fill in the missing number
To tackle this problem, we'll expand using the distributive property, compare it with the given quadratic equation , and solve for the missing value .
Step 1: Expand the expression .
Applying the distributive property, we obtain:
.
This simplifies to:
.
Step 2: Compare the expanded expression with .
From the equation , equate the coefficients and constant term:
Step 3: Solve the equations.
Since both the conditions lead to , we verify the calculations.
Therefore, the missing number is .
Fill in the missing number
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Apply the distributive property.
The expression becomes:
This simplifies to:
Step 2: We combine like terms:
The polynomial becomes .
Step 3: Compare it with :
For the terms, set . Solving for , we get . This seems incorrect; correct mistake:
Recompute: Actually, setting gives . Thus, . Oops, didn't need, re-evaluate: actually.
For the terms, set . Solving for , so .
Check decision points: Corrections.
The calculation reconfirms:
holds with .
Therefore, the missing number is .
Complete the missing element
To solve this problem, we'll approach it by expanding and comparing terms:
Let's execute these steps:
Step 1: Consider the expression .
Using distributive property, it expands to:
.
This gives us:
.
Step 2: Now, compare this expansion to the given expression .
Step 3: From the comparison, we have:
- terms match.
- terms match.
- For the term, should match , implying . Therefore, the missing term must contribute an additional , making it . Thus, .
- For the constant term, , leading to the same conclusion.
Therefore, the solution to the problem is .
Fill in the missing number
To solve this problem, we'll proceed as follows:
Now, let's work through these steps:
Step 1: Apply the distributive property to expand :
.
Expanding each term, we get:
,
which simplifies to .
Step 2: Compare this with the right side, .
Step 3: By comparing terms, note:
- matches on both sides.
- matches on both sides.
- implies that .
- confirms .
Therefore, the correct missing number that should replace the question mark is .
Fill in the missing number
To solve the problem, we'll follow these steps:
Let's carry out these steps in detail:
Step 1: Expand . Use distributive property:
.
This results in the following steps:
Combining these gives:
.
Step 2: Equate this expression to the given polynomial :
.
Step 3: From this, match the coefficients from both the polynomials:
Solve for :
Therefore, the missing number k is .
Complete the missing element
\( (m+n)(4+?)=n^2+mn+4m+4n \)
Complete the missing element
\( (-4-y)(-2x-?)=8x-16-4y+2xy \)
Complete the missing element
\( (3x-8)(-4+?)=-3x^2-4x+32 \)
Fill in the missing number
\( (x-4y)(2x+?)=2x^2-12y-8xy+3 \)
Complete the missing element
\( (a+?)(-2a+4)=-2a^2-20a+48 \)
Complete the missing element
To solve this problem, we'll apply the distributive property to expand and match the expressions:
The expanded expression matches the target expression, so the missing term in is indeed .
Therefore, the complete expression is .
Complete the missing element
To solve for the missing element, we'll employ the distributive property as follows:
1. Let's expand :
2. Combine these results to form the expression:
3. Compare this expression with the target expression :
4. From , we solve for :
Thus, the missing number is needed to get the resulting expression to match.
Therefore, the missing element is .
Complete the missing element
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Express using the distributive property:
.
This simplifies to: .
Step 2: Compare with , equaling terms by degree:
- The constant term (32) already matches.
- The term is .
- The term arises from .
Step 3: Solve for the missing element by aligning coefficients:
, therefore .
Thus, the missing element is .
Therefore, the solution to the problem is , which corresponds to choice 2.
Fill in the missing number
To solve the problem, we will expand using the distributive property and match it to the given polynomial:
First, expand the expression:
Upon expanding, we get:
We equate the expanded expression to the given polynomial :
By matching terms, we see:
1. The + needs to compensate for and the constant 3.
2. Equate negative constant and remaining components:
Therefore, .
After calculation, the missing number aligns with the given polynomial. Therefore, the missing number is:
.
Complete the missing element
To solve the problem, we'll follow these steps:
Step 1: Expand the original expression:
Expanding gives us:
Step 2: Equate this with the provided expanded form :
Step 3: Match the coefficients:
The missing element is .
Complete the missing element
\( (x+2)(?-4)=a+2\frac{a}{x}-4x-8 \)
Complete the missing element
\( (x+?)(x-8)=x^2-5x-24 \)
Fills in the missing element
\( (2a+b)(3b-?)=6ab+5a+2b \)
Complete the missing element
\( (a+4)(?+b)=ac+ab+4c+4b \)
\( (x+?)(x+?)=x^2+7x+10 \)
Complete the missing element
To solve this problem, we’ll follow these steps:
Firstly, we need to expand the left side of the equation :
Applying the distributive property:
.
Continue expanding:
.
Now, compare the simplified left hand expression with the right side of the given equation .
By matching terms:
To create the term , we deduce that the missing value for must be , because substituting results in terms becoming and .
Therefore, the solution for the missing element is .
Complete the missing element
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Write the left expression as .
Step 2: Compare the expanded form, , to the given .
Step 3: We see that the coefficients for should match, so we have . Solving for , we get:
Optionally, verify by comparing the constant terms: .
Therefore, the missing element in the binomial is .
Fills in the missing element
Let's solve this problem step by step.
Step 1: Apply the distributive property to the left-hand side.
The expression expands to:
Step 2: Distribute each term:
In equation form:
Now, compare this with the given equation: .
Notice that doesn't present on the right-hand side, indicating no term in should exist. Moreover, right-hand terms and 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.
No adequate solution
Complete the missing element
To find the missing element in the expression , we will use the distributive property to find .
Step 1: Let be the first factor, and assume is , where is the unknown we are trying to find.
Step 2: We know from the equation given that this should equal .
Compare both expressions:
Step 3: Match terms from both equations. On the left side, terms are :
- The term on the left matches with on the right.
- The term on the left matches with on the right.
Step 4: Remaining terms are on the left and on the right. For these to match:
Therefore, the missing element is which matches choice ID "1": .
To solve this problem, we'll follow these steps:
Let's work through each step:
Step 1: Our task is to factor the expression . We need two numbers whose product is (the constant term) and whose sum is (the coefficient of ).
Step 2: We list pairs of numbers that multiply to :
-
-
Among these, only the pair and add up to . Therefore, the expressions needed are and .
Step 3: We substitute these values into the binomials: . Expanding this verifies:
.
Therefore, the factorization is correct, and the solution reached is .
Therefore, the solution to the problem is .
\( (x-?)(x+?)=x^2+x-12 \)
\( (x+?)(x-?)=x^2-3x-40 \)
Complete the missing element
\( -(2y+z)(z-?)=4z+8y-z^2-2yz \)
Complete the missing element
\( (?x+8)(a-9)=\frac{1}{3}xa-3x+8a-72 \)
\( \left(x-?\right)\left(x-?\right)=x^2-x+0.25 \)
To solve this problem, we'll follow these steps:
Therefore, the factorized form of the given quadratic polynomial is .
To solve this problem, we will follow these steps:
Now, work through each step:
1. The expanded form of gives .
2. Comparing with , we get two equations:
(coefficient of ) and (constant term).
3. We need two numbers whose sum is and product is .
4. Upon inspection, the numbers that satisfy these conditions are and , since and .
Therefore, substituting and into the expression, the factorization of the quadratic is .
Thus, the solution to the problem is .
Complete the missing element
Complete the missing element