2. Factorize (a + b)whole cube - 8(a - b)whole cube
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Step-by-step explanation:
(a+b)³-8(a-b)³
=(a+b)³-(2[a-b])³
=(a+b-2a-2b)(a²+b²+2ab+4a²+4b²+8ab+2a²-2b²)
=(-a-b)(7a²+3b²+10ab)
= -(a+b)(7a²+10ab+3b²)
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