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## Homework Statement

I have following eq:

(x)^3 -12(x) -16=0

How to find x-4 a factor of this eq. This means we have:

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

I don’t know how to get the above.

## Homework Equations

(x)^3 -12(x) -16=0

## The Attempt at a Solution

I cant go beyond that:

(x)^3 -12(x) -16=0

X(x^2 -12-16/x) = 0

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