已知4个单项式:-2x^2*y,2x^3*y^2.-4xy^2,3xy.请你用加、减、乘、除四种运算中的一种或几种,使它们的结果
人气:157 ℃ 时间:2019-08-19 20:45:48
解答
(-2x²y)(3xy)+2x³y²=-4x³y²
(-4x³y²)/(-4xy²)=x²
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