Question

Given f(x) = 3/2x - 5 and g(x) = x^2 + 2x solve for g(-2)

Answer 1

g(-2) = 0

Explanation:

Since it is asking for g(-2), that means that we only have to worry about the equation g(x) = x^2+2x. When it asks for g(-2), that means you replace every "x" that shows up in the equation with -2.

So plugging in -2 for x we get g(-2)=(-2)^2+2(-2). Simplifying we get g(-2)=4+(-4). Now adding we finally get g(-2)=0