- #1

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## Homework Statement

f(x) = x(x-5)^4

## Homework Equations

## The Attempt at a Solution

I used product rule and chain rule so,

1(x-5)^4 + 4x(x-5)^3(1)

The answer to this question is 5(x-5)^3(x-1). I left it like the answer above. I don't know how to expand (x-5)^4. Thanks.