分解因式(1)3(x-y)+2(y-x)² 分式计算(1)1/(x-1)+1/(1+x)
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分解因式(1)3(x-y)+2(y-x)² 分式计算(1)1/(x-1)+1/(1+x)
![分解因式(1)3(x-y)+2(y-x)² 分式计算(1)1/(x-1)+1/(1+x)](/uploads/image/z/3404242-10-2.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%881%EF%BC%893%EF%BC%88x-y%EF%BC%89%2B2%EF%BC%88y-x%EF%BC%89%26%23178%3B+%E5%88%86%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%881%EF%BC%891%2F%EF%BC%88x-1%EF%BC%89%2B1%2F%EF%BC%881%2Bx%EF%BC%89)
分解因式
(1)3(x-y)+2(y-x)²
=3(x-y)+2(x-y)²
=(x-y)[3+2(x-y)]
=(x-y)(3+2x-2y)
分式计算
(1)1/(x-1)+1/(1+x)
=(x+1)/[(x+1)(x-1)]+(x-1)/[(x+1)(x-1)]
=(2x)/[(x+1)(x-1)]
=(2x)/(x²-1)
(1)3(x-y)+2(y-x)²
=3(x-y)+2(x-y)²
=(x-y)[3+2(x-y)]
=(x-y)(3+2x-2y)
分式计算
(1)1/(x-1)+1/(1+x)
=(x+1)/[(x+1)(x-1)]+(x-1)/[(x+1)(x-1)]
=(2x)/[(x+1)(x-1)]
=(2x)/(x²-1)
分解因式(1)3(x-y)+2(y-x)² 分式计算(1)1/(x-1)+1/(1+x)
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