【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4m
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 00:25:01
![【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4m](/uploads/image/z/143189-53-9.jpg?t=%E3%80%90%E6%95%B0%E5%AD%A6%E5%88%86%E5%BC%8F%E8%AE%A1%E7%AE%97%2C%E8%A6%81%E8%BF%87%E7%A8%8B%E3%80%91x%E5%88%86%E4%B9%8B0-3ab%C3%979a%26%23178%3Bb%E5%88%86%E4%B9%8B2x%26%23178%3Bx%E5%88%86%E4%B9%8B0-3ab%C3%979a%26%23178%3Bb%E5%88%86%E4%B9%8B2x%26%23178%3B-3ab%C3%B73a%E5%88%86%E4%B9%8B2b%26%23178%3B%EF%BC%88xy-x%26%23178%3B%EF%BC%89%C3%B7xy%E5%88%86%E4%B9%8Bx-yx%2By%E5%88%86%E4%B9%8Bx%26%23178%3B-y%26%23178%3B%C3%B72x%2B2y%E5%88%86%E4%B9%8Bx%26%23178%3B%2Bxym%2B1%E5%88%86%E4%B9%8B4m%26%23178%3B-4m%2B1%C3%B7m%26%23178%3B-1%E5%88%86%E4%B9%8B4m%26%231)
【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4m
【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
【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4m
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)
=2(x-y)/x
m+1分之4m²-4m+1÷m²-1分之4m²-1
=(2m-1)²/(m+1)×(m+1)(m-1)/(2m+1)(2m-1)
=(2m-1)(m-1)/(2m+1)
(4x²-y²)÷2x-y分之4x²-4xy+y²
=(2x+y)(2x-y)×(2x-y)/(2x-y)²
=2x+y
x分之0-3ab×9a²b分之2x²表示这里看不懂···
写错了没?