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分式1x2-y2与1x+y的最简公分母为()
A.x-yB.x+yC.x2-y2D.(x2-y2)(x+y)
A.x-yB.x+yC.x2-y2D.(x2-y2)(x+y)
29-3a和a-1a2-9的最简公分母是______,通分后为______.
分式1x+y,2xx2-y2,y2(y-x)的最简公分母是()
A.(x2-y2)(x-y)B.(x2-y2)(x+y)(x-y)C.2(x+y)(x-y)D.x2-y2
A.(x2-y2)(x-y)B.(x2-y2)(x+y)(x-y)C.2(x+y)(x-y)D.x2-y2
分式1x2-2x与1x2-4的最简公分母是()
A.x(x+2)(x-2)B.(x2-2x)(x2-4)C.(x+2)(x-2)D.x(x-2)(x-4)
A.x(x+2)(x-2)B.(x2-2x)(x2-4)C.(x+2)(x-2)D.x(x-2)(x-4)
对于分式方程xx-3=2+3x-3,有以下说法:①最简公分母为(x-3)2;②转化为整式方程x=2+3,解得x=5;③原方程的解为x=3;④原方程无解.其中,正确说法的个数为()
A.1个B.2个C.3个D.4个
A.1个B.2个C.3个D.4个