a+b/2ab
a+b/2ab
2AB/A+B
(a-b)(a^2+ab+b) 化简
已知a^2+ab+b^2|ab(a+b),求证(a-b)^3>3ab
因式分解a^+b^+2a^b+2ab^+a^+b^+3ab+a+b
计算ab/(a+b-1)(a+b)+ab/(a+b)(a+b+1)+ab/(a+b+1)(a+b+2)+.+ab/(a+
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
若a/b=2 则a*a-ab+b*b/a*a+b*b等于?
a-b/a^2+ab / ab-a^2/a^2b^2-b^4
已知a+2b=0,求a*a+2ab-b*b/2a*a+ab+b*b