约分 (6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²)(6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²) (16b²y²)/(20ay³) (x²+6x+9)/(x²-9) (m³-2m²-m)/(m²-m) (a²+ab)/(a²
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![约分 (6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²)(6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²) (16b²y²)/(20ay³) (x²+6x+9)/(x²-9) (m³-2m²-m)/(m²-m) (a²+ab)/(a²](/uploads/image/z/1345027-67-7.jpg?t=%E7%BA%A6%E5%88%86+%EF%BC%886ab%26%23178%3B%29%2F%288b%26%23179%3B%29+%28x%26%23179%3B-2x%26%23178%3By%29%2F%28x%26%23178%3By-2xy%26%23178%3B%29%EF%BC%886ab%26%23178%3B%29%2F%288b%26%23179%3B%29+%28x%26%23179%3B-2x%26%23178%3By%29%2F%28x%26%23178%3By-2xy%26%23178%3B%29+%2816b%26%23178%3By%26%23178%3B%29%2F%2820ay%26%23179%3B%29+%28x%26%23178%3B%2B6x%2B9%29%2F%28x%26%23178%3B-9%29+%28m%26%23179%3B-2m%26%23178%3B-m%29%2F%28m%26%23178%3B-m%29+%28a%26%23178%3B%2Bab%29%2F%28a%26%23178)
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约分 (6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²)(6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²) (16b²y²)/(20ay³) (x²+6x+9)/(x²-9) (m³-2m²-m)/(m²-m) (a²+ab)/(a²
约分 (6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²)
(6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²) (16b²y²)/(20ay³) (x²+6x+9)/(x²-9) (m³-2m²-m)/(m²-m) (a²+ab)/(a²-b²) 约分
约分 (6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²)(6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²) (16b²y²)/(20ay³) (x²+6x+9)/(x²-9) (m³-2m²-m)/(m²-m) (a²+ab)/(a²
(6ab²)/(8b³) =3a/4b
(x³-2x²y)/(x²y-2xy²) =x²(x-2y)/xy(x-2y)=x/y
(16b²y²)/(20ay³)=4b²/(5ay)
(x²+6x+9)/(x²-9) =(x+3)²/(x+3)(x-3)=(x+3)/(x-3)
(m³-2m²-m)/(m²-m)=m(m²-2m-1)/m(m-1)=(m²-2m-1)/(m-1)
(a²+ab)/(a²-b²) =a(a+b)/(a+b)(a-b)=a/(a-b)