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