on simplifying (a+b)^3+(a-b)^3+6a(a^2-b^2)
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Answer:
Step-by-step explanation:
Solution
1) Expand
α³+2α²b+αb²+bα²+2b²α+b³+α³−2α²b+αb²−bα²+2b²α−b³+6α³−6αb²
Gather like terms
(α³+α³+6α³)+(2α²b+α²b−2α²b−α²b)+(αb²+2αb²+αb²+2αb²−6αb²)+(b³−b³)
Simplify
8α³
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