已知X-3Y+4=0,即X-3Y=-4
X^2-XY-6Y^2=(x+2y)(x-3y)
所以X^2-XY-6Y^2/2X+4Y=(x+2y)(x-3y)/2X+4Y=x-3y/2=-2
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
数学人气：635 ℃时间：2019-10-31 21:49:57
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