[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)
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[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)[12(
[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)
[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)
[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)
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