灵鹊做题网约分 （6ab²)/(8b³) (x³-2x²y)/(x²y-2xy&
来源：学生作业帮 编辑：灵鹊做题网作业帮 分类：数学作业 时间：2024/04/29 15:04:54
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
（6ab²)/(8b³) (x³-2x²y)/(x²y-2xy²) (16b²y²)/(20ay³) (x²+6x+9)/(x²-9) (m³-2m²-m)/(m²-m) (a²+ab)/(a²-b²) 约分
（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)
(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)
约分 （6ab²)/(8b³) (x³-2x²y)/(x²y-2xy&
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