a的平方分之4a-1/a

问题描述:

a的平方分之4a-1/a
1/a+1/b
b/3a+a/2b
1/a-1 - 1- a的平方分之2
a+b/ab-b+c/bc
(x-3)的平方分之3x - x/3-x
/ 为分号

a的平方分之4a-1/a=4/a-1/a=3/a1/a+1/b=b/(ab)+a/(ab)=(a+b)/(ab)b/3a+a/2b=2b²/(6ab)+3a²/(6ab)=(2b²+3a²)/(6ab)1/(a-1) - (1- a的平方)分之2=(a+1)/(a²-1)+2/(a²-1)=(a+3)/(a²...