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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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