Question

How do you find all the zeros of `x^4-x^3-20x^2`?

Answer 1

You must set the expression to 0 and factor.

Explanation:

`x^2(x^2 - x - 20) = 0`

`x^2(x - 5)(x + 4) = 0`

`x = 0, 5, -4`

Hopefully this helps!