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OpenStudy (anonymous):
Simplify. 1 + 1/3 - (1/3)^2 + (1/3)^3
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OpenStudy (anonymous):
Do it
OpenStudy (anonymous):
i got 34/27. It looks wrong
OpenStudy (anonymous):
yes, it's wrong
OpenStudy (anonymous):
Hint\[z ^{-a}=\frac{1}{z^a}\]
OpenStudy (anonymous):
ph, you don't have negative exponents, excuse me.
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OpenStudy (anonymous):
add them carefully.
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