a²-ab/a-b约分等多少还有:2a²(x-y)³/a(y-x) a²+ab/a²+2ab+b² x²-x-2/4-x² a²+4a+3/a²+a-6都是约
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![a²-ab/a-b约分等多少还有:2a²(x-y)³/a(y-x) a²+ab/a²+2ab+b² x²-x-2/4-x² a²+4a+3/a²+a-6都是约](/uploads/image/z/3812210-26-0.jpg?t=a%26%23178%3B-ab%2Fa-b%E7%BA%A6%E5%88%86%E7%AD%89%E5%A4%9A%E5%B0%91%E8%BF%98%E6%9C%89%EF%BC%9A2a%26%23178%3B%28x%EF%BC%8Dy%29%26%23179%3B%2Fa%28y%EF%BC%8Dx%29+++++++++++++++++++++++++++a%26%23178%3B%EF%BC%8Bab%2Fa%26%23178%3B%EF%BC%8B2ab%EF%BC%8Bb%26%23178%3B++++++++++++++++++++++++x%26%23178%3B%EF%BC%8Dx%EF%BC%8D2%2F4%EF%BC%8Dx%26%23178%3B+++++++++++++++++++++++++++a%26%23178%3B%EF%BC%8B4a%EF%BC%8B3%2Fa%26%23178%3B%EF%BC%8Ba%EF%BC%8D6%E9%83%BD%E6%98%AF%E7%BA%A6)
a²-ab/a-b约分等多少还有:2a²(x-y)³/a(y-x) a²+ab/a²+2ab+b² x²-x-2/4-x² a²+4a+3/a²+a-6都是约
a²-ab/a-b约分等多少
还有:2a²(x-y)³/a(y-x) a²+ab/a²+2ab+b²
x²-x-2/4-x² a²+4a+3/a²+a-6
都是约分,有过程的最好······感谢
a²-ab/a-b约分等多少还有:2a²(x-y)³/a(y-x) a²+ab/a²+2ab+b² x²-x-2/4-x² a²+4a+3/a²+a-6都是约
a²-ab/a-b
=a(a-b)/(a-b)
=a
2a²(x-y)³/a(y-x)
=-2a(x-y)²
a²+ab/a²+2ab+b²
=a(a+b)/(a+b)²
=a/(a+b)
x²-x-2/4-x²
=(x-2)(x+1)/(2-x)(2+x)
=-(x+1)/(x+2)
a²+4a+3/a²+a-6
=(a+3)(a+1)/(a+3)(a-2)
=(a+1)/(a-2)
1=a
2=2a(x-y)^2
3=a/(a+b)
4=(x+1)/(x+2)
5=(a+1)/(a-2)
1.上下同除 a-b 得a
2.同除a(x-y) 得-2a(x-y)^2
3.同除a+b 得a/(a+b)
4.同除 x-2 得-(x+1)/(x+2)
5. 同除a+3 得 (a+1)/(a-2)