化简分式① 2x³(y-x)³/4y(x-y)²
问题描述:
化简分式① 2x³(y-x)³/4y(x-y)²
①2x³(y-x)³/4y(x-y)²
②-x²+ 6x-9/x²-9
答
①-y²(x-y)/2
②- x-3/x+3