a-{b-2a+[3a-2(b+2a)+5b]}化简
化简:{[(2a-b)/(a+b)]-[b/(a-b)]}÷[(a-2b)/(a+b)]
化简(2a-b/a+b-b/a-b)除以a-2b/a +b
化简(2a-b/a+b-b/a-b)除以a-2b/a+b
化简 |a+b|-|3a-2b|
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
一.化简.5(a+b)²-3(2a+3b)-3(a+b)²+(2a+3b)
因式分解(a-b)-3a+3b (a+b)(a-b)-2b(3a-5b)
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
(a+b/b-a)+(2a/a-b)-(b-a/2b)等于多少
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
化简:5(a-2b+c)-4(-a+b-c)+4(3a-2b)
[(4a+3b)(4a-3b)-(3a=3b)(2a-3b)]/5a 化简