约分 2bc/ac 【x+y】y/xy^2 x^2+xy/[x+y]^2 x^2-y^2/[x-y]^25x/25x^2 9ab^2+6abc/3a^2b 9a^2+6ab+b^2/3a+b x^2-36/2x+12
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约分2bc/ac【x+y】y/xy^2x^2+xy/[x+y]^2x^2-y^2/[x-y]^25x/25x^29ab^2+6abc/3a^2b9a^2+6ab+b^2/3a+bx^2-36/2x+1
约分 2bc/ac 【x+y】y/xy^2 x^2+xy/[x+y]^2 x^2-y^2/[x-y]^25x/25x^2 9ab^2+6abc/3a^2b 9a^2+6ab+b^2/3a+b x^2-36/2x+12
约分 2bc/ac 【x+y】y/xy^2 x^2+xy/[x+y]^2 x^2-y^2/[x-y]^2
5x/25x^2 9ab^2+6abc/3a^2b 9a^2+6ab+b^2/3a+b x^2-36/2x+12
约分 2bc/ac 【x+y】y/xy^2 x^2+xy/[x+y]^2 x^2-y^2/[x-y]^25x/25x^2 9ab^2+6abc/3a^2b 9a^2+6ab+b^2/3a+b x^2-36/2x+12
2b/a
(x+y)/xy
x/(x+y)
(x+y)/(x-y)
1/5x
(3b+2c)/a
3a+b
(x-6)/2
你自己想
2b/a 【x+y】/xy x/[x+y] x+y/[x-y
1/5x 3b+2c/a 3a+b x-6/2
2b/a (x+y)/xy x/(x+y) (x+y)/(x-y)
1/5x (3b+2c)/a 3a+b (x-6)/2