Question

Let f(x)= x+2 and g(x)= x^2. Find (g•f)(-5)

Answer 1

-5x^3 -10x^2

Explanation:

(x^2 *(x+2))(-5)

Apply the distributive property

(x^2 x + x^2*2)(-5)

Multiply x^2 by x by adding exponents

(x^3+x^2 *2)(-5)

Apply the distributive property

(x^3 + 2x^2)(-5)

-5x^3 -10x^2