(2xy）²·（-3x+2xy-4)计算
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(2xy）²·（-3x+2xy-4)计算(2xy）²·（-3x+2xy-4)计算(2xy）²·（-3x+2xy-4)计算(2xy）²·（-3x+2xy-4)=4
(2xy）²·（-3x+2xy-4)计算
(2xy）²·（-3x+2xy-4)计算
(2xy）²·（-3x+2xy-4)计算
(2xy）²·（-3x+2xy-4)
=4x²y²·（-3x+2xy-4)
=-12x³y²+8x³y³-16x²y²
(2xy）²·（-3x+2xy-4)
=4*x^2*y^2*(-3x+2xy-4)
=-12x^3y^2+8x^3y^3-16*x^2*y^2