(a-2b)^3-512b^3 please answer this question
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Step-by-step explanation:
use the identity a³-b³=(a-b)(A²+ab+b²)
let a=(a-2b) and b=(8b)
(a-2b-8b)(a²-4ab+4b²+8ab-16b²+64b²)
(a-10b)(a²+4ab+48b²)
a³+4a²b+48ab²-10a²b-40ab²+480b³
a³-6a2b+8ab²+480b³
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