(1)1/2ab³和2/5a²b²c(2)a/2xy和b/3x²(3)3c/2ab²和-a/8bc²(4)1/y-1和1/y+1 分式通分,下列计算请把计算过程详细地写出来,
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![(1)1/2ab³和2/5a²b²c(2)a/2xy和b/3x²(3)3c/2ab²和-a/8bc²(4)1/y-1和1/y+1 分式通分,下列计算请把计算过程详细地写出来,](/uploads/image/z/6443935-7-5.jpg?t=%EF%BC%881%EF%BC%891%2F2ab%26sup3%3B%E5%92%8C2%2F5a%26sup2%3Bb%26sup2%3Bc%282%29a%2F2xy%E5%92%8Cb%2F3x%26sup2%3B%EF%BC%883%EF%BC%893c%2F2ab%26sup2%3B%E5%92%8C-a%2F8bc%26sup2%3B%EF%BC%884%EF%BC%891%2Fy-1%E5%92%8C1%2Fy%2B1+%E5%88%86%E5%BC%8F%E9%80%9A%E5%88%86%2C%E4%B8%8B%E5%88%97%E8%AE%A1%E7%AE%97%E8%AF%B7%E6%8A%8A%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B%E8%AF%A6%E7%BB%86%E5%9C%B0%E5%86%99%E5%87%BA%E6%9D%A5%2C)
(1)1/2ab³和2/5a²b²c(2)a/2xy和b/3x²(3)3c/2ab²和-a/8bc²(4)1/y-1和1/y+1 分式通分,下列计算请把计算过程详细地写出来,
(1)1/2ab³和2/5a²b²c
(2)a/2xy和b/3x²
(3)3c/2ab²和-a/8bc²
(4)1/y-1和1/y+1
分式通分,下列计算请把计算过程详细地写出来,
(1)1/2ab³和2/5a²b²c(2)a/2xy和b/3x²(3)3c/2ab²和-a/8bc²(4)1/y-1和1/y+1 分式通分,下列计算请把计算过程详细地写出来,
1:1/2ab³=5ac/10a²b³c;
2/5a²b²c=4b/10a²b³c;
2:a/2xy=3ax/6x²y;
b/3x²=2y/6x²y;
3:3c/2ab²=12c³/8ab²c²;
-a/8bc²=-a²c/8ab²c²;
4:1/(y-1)=(y+1)/(y²-1)
1/(y+1)=(y-1)/(y²-1)
解(1):最简公分母:10a^2b^3c 1*5ac/2ab^3*5ac=5ac/10a^2b^3c 2*2b/5a^2b^2c*2b=4b/10a^2b^3c
(2):最简公分母:6x^2y a*3x/2xy*3x=3ax/6^2y b*2y/3x^2*2y=2by/6x^2y
(3):最简公分母:8ab^2c^2 3c*4c^2/...
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解(1):最简公分母:10a^2b^3c 1*5ac/2ab^3*5ac=5ac/10a^2b^3c 2*2b/5a^2b^2c*2b=4b/10a^2b^3c
(2):最简公分母:6x^2y a*3x/2xy*3x=3ax/6^2y b*2y/3x^2*2y=2by/6x^2y
(3):最简公分母:8ab^2c^2 3c*4c^2/2ab^2*4c^2=12c^3/8ab^2c^2 -a*ab/8bc^2*ab=-a^2b/8ab^2c^2
(4):最简公分母:(y+1)(y-1) 1*(y+1)/(y-1)*(y+1)=y+1/(y+1)(y-1) 1*(y-1)/(y+1)(y-1)=y-1/(y+1)(y-1)
^是平方的意思,*是乘号,有错误的话再找我,电脑大的不方便。俄数学不错,也在学分式,有问题找俄。
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