Solve a·b+b: Substituting Values a=-3 and b=-2

a⋅b+b= a\cdot b+b=

Solve the following problem if:

a=−3,b=−2 a=-3,b=-2

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:09 First, set up the problem, then calculate the answer.
00:13 Let's substitute the right values, following the data carefully. Remember to use parentheses correctly.
00:35 Remember, negative times negative equals positive.
00:49 And positive times negative equals negative.
00:53 That's how we solve the problem! Great job!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

a⋅b+b= a\cdot b+b=

Solve the following problem if:

a=−3,b=−2 a=-3,b=-2

2

Step-by-step solution

Let's substitute the numbers into the formula:

−3×(−2)+(−2)= -3\times(-2)+(-2)=

Remember the rule:

(−x)×(−x)=+x (-x)\times(-x)=+x

First, let's solve the multiplication problem:

−3×−2=6 -3\times-2=6

We obtain the following expression:

6+(−2)= 6+(-2)=

Let's remember the rule:

+(−x)=−x +(-x)=-x

Let's write the expression in the appropriate form:

6−2= 6-2=

Therefore, the answer is:

4 4

3

Final Answer

4 4

Practice Quiz

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What will be the sign of the result of the next exercise?

\( (-2)\cdot(-4)= \)

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