[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
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)]
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 (a²+b²/a²-b²-a-b/a+b)÷2ab/(a-b)(a+b)&
化简 |a+b|-|3a-2b|
A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+B A-B×3=C C+2×7+2=1
(5a-3b)-3(a²-2b)化简