(a-2b)∧2+6(a-2b)+9

-2a(a+b)+b(a+b) (a-2b)∧2+6(a-2b)+9 A-B A+B 2B+A 3A-B 6A+2B 9(a-b)(a+b)-3(a-b)^2 先化简,再求值：(2a-b)^2-(2a+b)(a-b)-3(a-3b)(a+3b),其中|a-1|+b^2=6b-9 a^2b(a-b)-6ab(b-a), 因式分解:3b(b-a)+6a(a-b)^2 (a^2+1)(-4a^2+1)+a^4-1 3a(a-b)(a+b)-6(b-a)^2a^2-9(a-b)^2= 3a(a-b)(a+b)-6(b-a)^2= (a+2b)(a-2b)+(a-b)(a+b)-2(a-3b)(a-b) 5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b) (3a-2b)(9+6b) -a-b+2b^2/a+b 化简：|a+b|+|b-a|+|2b| |a+b|-|b-a|+|2b|化简哦! a-b+2b²/a+b 通分a-b,2b^/a+b a+2b/2a-3b=3 求解4b+2a/9b-6a-4a-6b/3a+6b=? 当a+2b/2a-3b=3,求代数式4b+2a/9b-6a-4a-6b/3a+6b