【数学分式计算,要过程】x分之0-3ab×9a²b分之2x²x分之0-3ab×9a²b分之2x²-3ab÷3a分之2b²(xy-x²)÷xy分之x-yx+y分之x²-y²÷2x+2y分之x²+xym+1分之4m²-4m+1÷m²-1分之4m²-1(4x²-y²)÷2x-y分之4x²-4xy+y²第一题打错了..是x分之-3ab×9a²b分之2x²

问题描述:

【数学分式计算,要过程】x分之0-3ab×9a²b分之2x²
x分之0-3ab×9a²b分之2x²
-3ab÷3a分之2b²
(xy-x²)÷xy分之x-y
x+y分之x²-y²÷2x+2y分之x²+xy
m+1分之4m²-4m+1÷m²-1分之4m²-1
(4x²-y²)÷2x-y分之4x²-4xy+y²
第一题打错了..
是x分之-3ab×9a²b分之2x²

x分之0-3ab×9a²b分之2x²表示这里看不懂···
写错了没?

x分之0-3ab×9a²b分之2x²=-2x/3a-3ab÷3a分之2b²=-9a²/b(xy-x²)÷xy分之x-y=-x(x-y)×xy/(x-y)=-x²y x+y分之x²-y²÷2x+2y分之x²+xy=(x-y)(x+y)/(x+y)×2(x+y)/x(x+y...