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Question
Evaluate: (a2 + 2ab + b2)(a + b)
Solution
(a2 + 2ab + b2)(a + b)
= a(a2 + 2ab + b2) + b(a2 + 2ab + b2)
= a3 + 2a2b + ab2 + a2b + 2ab2 + b3
= a3 + 3a2b + 3ab2 + b3
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