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I can not find the answer could you guys help me​

I can not find the answer could you guys help me​-example-1
User Grokodile
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1 Answer

5 votes

Answer: A

Explanation:

Power rule: derivative of x^(something) is (something)* x (something -1). Rewrite the second term as x^(-7) and it all becomes -3x^(-3-1) + (-7)x^(-7-1). Rest is just writing it in a "nicer" form

User Evanr
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