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May 1st, 2016, 03:14 PM   #11
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There are two things you need to know for that.
Firstly, $(ab)^c = a^cb^c$.
Secondly, $a^ba^c = a^{b + c}$.

So for example, $\dfrac{1}{5}(7x^2)^{-4/5} = \dfrac{1}{5}\cdot7^{-4/5}x^{-8/5}$
Keep expanding like that and you should get the right hand side.
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May 1st, 2016, 03:50 PM   #12
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Quote:
Originally Posted by Incomprehensible View Post
I'm not sure if this problem can be solved. I don't know the terminology for the math parts
Perhaps if you studied your precalculus notes, you would learn the correct terminology and what it means. The answer to your question would then be easy.

If you wish to understand a language, you must first understand how it is written.
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May 1st, 2016, 04:37 PM   #13
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@v8archie

How to differentiate something with u and x?
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May 1st, 2016, 05:29 PM   #14
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I've put a reply into that thread, which I encourage the OP to read.
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May 4th, 2016, 12:33 PM   #15
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I want to add again my annoyance that the Latex code for "nth root" is "\sqrt[n]{x}"! This is titled "How to differentiate square root with a small number to the left" when, in fact, it has nothing to do with the a square root!
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