Solve -a(b+2): Evaluating Expression When a=-5 and b=6

Question

Solve the following expression:

$-a\cdot(b+2)=$

If $a=-5,\text{ }b=6$

00:00 Place and calculate

00:05 We'll substitute appropriate values according to the given data, being careful with parentheses

00:17 Negative times negative always equals positive

00:23 Let's calculate the parentheses

00:26 Let's calculate the multiplication

00:29 And this is the solution to the question

Let's substitute the numbers into the formula:

$-(-5)\times(6+2)=$

Let's remember the rule:

$-(-x)=+x$

Let's write the exercise in the appropriate form:

$5\times(6+2)=$

Let's solve the expression in parentheses:

$6+2=8$

We obtain the following exercise:

$5\times8=$

Therefore, the answer is:

$40$

$40$