(9x-5)^3
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Answer:
729x³-1215x²+675x-25
Step-by-step explanation:
(9x-5)^3
(α-в)³=α³-3α²в+3αв²-в³
=(9x)³-3(9x)²(5)+3(9x)(5)²-(5)²
=729x³-3(81x²)(5)+27x(25)-25
=729x³-1215x²+675x-25
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