计算(3y\-2x)^2×(2x\3y)^3
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计算(3y\-2x)^2×(2x\3y)^3
计算(3y\-2x)^2×(2x\3y)^3
计算(3y\-2x)^2×(2x\3y)^3
=(-3y/2x×2x/3y)²×(2x/3y)
=(-1)²×(2x/3y)
=2x/3y
计算:(x+3y)(2x-y)
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