(1)x²+y²-2xy分之xy (分开的) 乘 3x²分之x-y (2)(x-y分之x - x-y分之2y) 乘 下面还有(1)x²+y²-2xy分之xy ( 分开的) 乘 3x²分之x-y(2)(x-y分之x - x-y分之2y) 乘 x-2y分之xy 除以(x分之1+y
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![(1)x²+y²-2xy分之xy (分开的) 乘 3x²分之x-y (2)(x-y分之x - x-y分之2y) 乘 下面还有(1)x²+y²-2xy分之xy ( 分开的) 乘 3x²分之x-y(2)(x-y分之x - x-y分之2y) 乘 x-2y分之xy 除以(x分之1+y](/uploads/image/z/401926-22-6.jpg?t=%281%29x%26%23178%3B%2By%26%23178%3B-2xy%E5%88%86%E4%B9%8Bxy+%EF%BC%88%E5%88%86%E5%BC%80%E7%9A%84%EF%BC%89+%E4%B9%98+3x%26%23178%3B%E5%88%86%E4%B9%8Bx-y+%282%29%28x-y%E5%88%86%E4%B9%8Bx+-+x-y%E5%88%86%E4%B9%8B2y%29+%E4%B9%98+%E4%B8%8B%E9%9D%A2%E8%BF%98%E6%9C%89%281%29x%26%23178%3B%2By%26%23178%3B-2xy%E5%88%86%E4%B9%8Bxy+%EF%BC%88+%E5%88%86%E5%BC%80%E7%9A%84%EF%BC%89+%E4%B9%98+3x%26%23178%3B%E5%88%86%E4%B9%8Bx-y%282%29%28x-y%E5%88%86%E4%B9%8Bx+-+x-y%E5%88%86%E4%B9%8B2y%29+%E4%B9%98+x-2y%E5%88%86%E4%B9%8Bxy+%E9%99%A4%E4%BB%A5%EF%BC%88x%E5%88%86%E4%B9%8B1%2By)
(1)x²+y²-2xy分之xy (分开的) 乘 3x²分之x-y (2)(x-y分之x - x-y分之2y) 乘 下面还有(1)x²+y²-2xy分之xy ( 分开的) 乘 3x²分之x-y(2)(x-y分之x - x-y分之2y) 乘 x-2y分之xy 除以(x分之1+y
(1)x²+y²-2xy分之xy (分开的) 乘 3x²分之x-y (2)(x-y分之x - x-y分之2y) 乘 下面还有
(1)x²+y²-2xy分之xy ( 分开的) 乘 3x²分之x-y
(2)(x-y分之x - x-y分之2y) 乘 x-2y分之xy 除以(x分之1+y分之1)
(1)x²+y²-2xy分之xy (分开的) 乘 3x²分之x-y (2)(x-y分之x - x-y分之2y) 乘 下面还有(1)x²+y²-2xy分之xy ( 分开的) 乘 3x²分之x-y(2)(x-y分之x - x-y分之2y) 乘 x-2y分之xy 除以(x分之1+y
(1)x²+y²-2xy分之xy ( 分开的) 乘 3x²分之x-y
=xy/(x-y)²×(x-y)/3x²
=y/3x(x-y)
=y/(3x²-3xy)
(2)(x-y分之x - x-y分之2y) 乘 x-2y分之xy 除以(x分之1+y分之1)
=(x-2y)/(x-y)×xy/(x-2y)×xy/(x+y)
=x²y²/(x-y)(x+y)
=x²y²/(x²-y²)