3x2y-3xy-6y=3y(x-2)(x+1) 为什么这是正确的?
1个回答
3y(x-2)(x+1)=(3xy-6y)(x+1)=3x2y+3xy-6xy-6y=3x2y-3xy-6y多项式乘法
如果对了,请采用,谢谢
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