Question

What are the x-intercepts of f(x) = x(x + 1)(x - 4)(x+8)??

Answer 1

f(x)= 3x^2+5x

Explanation:

f(x)= x(x+1)(x-4)(x+8)

f(x) = x^2 + x + x^2 - 4x + x^2 + 8x

f(x) 3x^2 + 5x