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OpenStudy (anonymous):
Expand the binomial (3a-b)^3
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OpenStudy (anonymous):
The answer options are like this a) 27a^3-27a^2b+9ab^2-b^3
OpenStudy (raden):
(3a-b)^3 = (3a-b)(3a-b)(3a-b) = ...
OpenStudy (raden):
find the result of (3a-b)(3a-b), first
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