Solve b(a+4): Substituting Values a=-6 and b=-2

Question

$b\cdot(a+4)=$

Replace and calculate if $a=-6,b=-2$

00:11 First, let's set up our problem and get ready to calculate.

00:16 Next, we'll substitute the right values in place. Remember to be careful with parentheses!

00:28 Now, let's calculate inside the parentheses.

00:38 Remember, a negative number times a negative number is always positive.

00:43 And there you go! That's how we find the solution to the problem.

Let's begin by inserting the known data into the formula:

$-6\times(-2+4)=$

First, let's solve the expression inside of the parentheses:

$-2+4=2$

We should obtain the following expression:

$-6\times2=$

Remembering the rule:

$(-x)\times(+x)=-x$

The answer should be:

$-12$

$-12$