[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
若a,b满足|a+5b-2|+(a+b-6)²=0,求代数式(a-3b)(a+2b)-(a+5b)(a+3b)
(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)
化简:{[(2a-b)/(a+b)]-[b/(a-b)]}÷[(a-2b)/(a+b)]
(a+b/a-b)²×2a-2b/3a+3b÷ab/a²-b²
计算(a-b)^m(a-b)[2(b-a)]^3[(b-a)^5]^2÷(a-b)^m=
因式分解(a-b)-3a+3b (a+b)(a-b)-2b(3a-5b)
计算代数式a-b+(a-2b)(a-b)+(a-2b)(a-b)²+(a-2b)(a-b)^3 当a=-3
1.(a-b)^2(b-a)^3(a-b)^-4
3a+2b用a+b,a-b表示
因式分解(a-b)^2*(a+b)-(a-b)^3