Please give me an example problem of this formula with answer
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example question — (5x+2y)³
Answer-
(5x+2y)³
= (5x)³ - (2y)³ - 3(5x)²(2y) + 3(5x)(2y)²
= 125x³ - 8y³ - 30x²y + 30y²
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example - (3a - 2b)³
Answer —
(3a - 2b)³
= (3a)³-(2b)³-3(3a)²(2b)+3(3a)(2b)²
= 27a³ - 8b³ - 18a²b + 18ab²
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