2(a+b)ˆ2m*3x(a+b)ˆ2n+2*4y(a+b)ˆ3
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2(a+b)ˆ2m*3x(a+b)ˆ2n+2*4y(a+b)ˆ3
2(a+b)ˆ2m*3x(a+b)ˆ2n+2*4y(a+b)ˆ3
2(a+b)ˆ2m*3x(a+b)ˆ2n+2*4y(a+b)ˆ3
2(a+b)ˆ2m*3x(a+b)ˆ2n+2*4y(a+b)ˆ3
=6x(a+b)ˆ(2m+2n)+8y(a+b)ˆ3