1. What is (2+y)³ written out? a)8 + 12y + 6y² + y³ b)6 + 8y + 4y² + y³
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By using identity (a+b)^3=a^3+b^3+3a^2b+3ab^2
And will be (a)8 + 12y + 6y² + y³
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