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Mathematics 21 Online
OpenStudy (anonymous):

simplify (3a)^-3

OpenStudy (saifoo.khan):

Step 1: \[\Large x^{-y} \to \frac{1}{x^y}\]

OpenStudy (anonymous):

ok so my answer should be 1/27a^3

OpenStudy (saifoo.khan):

Yes sir.

OpenStudy (anonymous):

thank you... wasnt sure if I was right? thanks again

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