Question

Select the correct answer.

What is the value of this expression when x = -6 and ?
4(x2 + 3) − 2y

Answer 1

D. 157

Explanation:

4(x^2+3)-2y

4(6^2+3)-2(-1/2) add in given values

4(39)+1. start with parentheses

156+1. combine like terms

157. answer

Answer 2

D. 157

Explanation:

Hi there!

We want to find the value of the expression 4(x²+3)-2y is when x=-6 and y=-1/2

Let's first simplify the expression, as that will likely make it easier

Distribute 4 to both x² and 3

4x²+12-2y

That's the expression

Substitute -6 as x into the expression

4(-6)²+12-2y

Raise (-6) to the second power

4*36+12-2y

Multiply 36 by 4

144+12-2y

Add 12 and 144 together

156-2y

Now the expression is 156-2y

But remember that we know that y=-1/2, and we haven't substituted it into the expression yet

Substitute -1/2 as y into the expression

156-2(-1/2)

Multiply

156+2/2

Simplify

156+1

Add

157

Hope this helps!