Question

What are the zeros of the function?

f(x)=2x3+6x2−8x

Answer 1

x= 0, 4, -1.

Explanation:

2x3 + 6x2 - 8x= 0 Take out the common factor 2x:

2x( x^2 - 3x - 4) = 0

2x(x - 4)(x + 1) = 0

2x = 0 or x - 4 = 0 or x + 1 = 0, so:

x = 0, 4, -1.