计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2
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计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2(2X)
计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2
计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2
计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2
(2X)²(-XY)³-(-3XY)(-2X^2Y)²
=4X²(-X³Y³)+3XY(4X²Y²)
=-4X^5Y³+12X³Y³
-3/4(-2x^2y)^2乘以(-1/3xy)-(-xy)^3乘以(-x^2)
=(-3/4)*(-1/3) *4(x^4)(y^2)×(xy) -(x^3)(y^3)×(x^2)
=(x^5)(y^3) -(x^5)(y^3)
=0
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计算(2X)^2(-XY)^3-(-3XY)(-2X^2Y)^2