Simplify (2x+y)^2+2(2x+y)^3
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Answer: using identities:
Step-by-step explanation:
4x^2 + y^2 + 4xy + 2{ x^3 +8y^3+6xy(2x+y)}
4x^2 + y^2 + 4xy +2x^3 +16y^3 + 24yx^2 +12xy^2
cannot simplyfy further ....
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