Question

Let f(x) =x squared +3x-4 and g(x) =x+5. Find f(x) times g(x).

Answer 1

x^3 + 8x^2 + 11x - 30

Explanation:

f(x) times g(x) = (x^2 +3x-4)(x+5)

= x^3 + 5x^2 + 3x^2 + 15x - 4x - 20

= x^3 + 8x^2 + 11x - 30