1.(1)x/3y与3x/2y² (2)6c/a² b与c/3ab² (3)x-y/2x+2y与xy/(x+y)²(4)2mn/4m²-9与2m-3/2m+3必须要写过程,不要直接写出答案,像下面这样:4a/5b² c,3c/10a² b,5b/-2ac²解;它们的最
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![1.(1)x/3y与3x/2y² (2)6c/a² b与c/3ab² (3)x-y/2x+2y与xy/(x+y)²(4)2mn/4m²-9与2m-3/2m+3必须要写过程,不要直接写出答案,像下面这样:4a/5b² c,3c/10a² b,5b/-2ac²解;它们的最](/uploads/image/z/8805268-28-8.jpg?t=1.%EF%BC%881%EF%BC%89x%2F3y%E4%B8%8E3x%2F2y%26%23178%3B+%EF%BC%882%EF%BC%896c%2Fa%26%23178%3B+b%E4%B8%8Ec%2F3ab%26%23178%3B+%283%EF%BC%89x-y%2F2x%2B2y%E4%B8%8Exy%2F%EF%BC%88x%2By%29%26%23178%3B%EF%BC%884%EF%BC%892mn%2F4m%26%23178%3B-9%E4%B8%8E2m-3%2F2m%2B3%E5%BF%85%E9%A1%BB%E8%A6%81%E5%86%99%E8%BF%87%E7%A8%8B%2C%E4%B8%8D%E8%A6%81%E7%9B%B4%E6%8E%A5%E5%86%99%E5%87%BA%E7%AD%94%E6%A1%88%2C%E5%83%8F%E4%B8%8B%E9%9D%A2%E8%BF%99%E6%A0%B7%EF%BC%9A4a%2F5b%26%23178%3B+c%2C3c%2F10a%26%23178%3B+b%2C5b%2F-2ac%26%23178%3B%E8%A7%A3%3B%E5%AE%83%E4%BB%AC%E7%9A%84%E6%9C%80)
1.(1)x/3y与3x/2y² (2)6c/a² b与c/3ab² (3)x-y/2x+2y与xy/(x+y)²(4)2mn/4m²-9与2m-3/2m+3必须要写过程,不要直接写出答案,像下面这样:4a/5b² c,3c/10a² b,5b/-2ac²解;它们的最
1.
(1)x/3y与3x/2y² (2)6c/a² b与c/3ab² (3)x-y/2x+2y与xy/(x+y)²
(4)2mn/4m²-9与2m-3/2m+3
必须要写过程,不要直接写出答案,像下面这样:
4a/5b² c,3c/10a² b,5b/-2ac²
解;它们的最简公分母是:10a² b² c²
4a/5b² c=4ax2a²c/10a² b²c²=8a³ c/10a² b² c²
3c/10a²b=3cxbc²/10a² b² c²=3bc³/10a² b² c²
5b/-2ac²=5bx(-5)ab²/10a² b² c²=-25ab³/10a² b² c²
1.(1)x/3y与3x/2y² (2)6c/a² b与c/3ab² (3)x-y/2x+2y与xy/(x+y)²(4)2mn/4m²-9与2m-3/2m+3必须要写过程,不要直接写出答案,像下面这样:4a/5b² c,3c/10a² b,5b/-2ac²解;它们的最
问题补充:只是通分 不是求答案!(x+2)/(x2-2x)=(x+2)/[x(x-2)]=[(x+2)(x-2)]/[x(x-2)(x-2)] (x-1)/[(xX-4X+4]=
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