# calculus

posted by .

Let f(x)=–5x(x–5).
Then f'(–1)=
And after simplifying f'(x)=

Hint: You may want to expand and simplify the expression for f(x) first.

• calculus -

John, I really believe that anybody who studies Calculus should be able to do an easy question such as this.

f(x) = 5x^2 - 25x

I will let you take it from there

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