(-2ab^2)^2*(3a^2b-2ab-1)

(a-b)^3+2ab(a-b) a+b/2ab 2AB/A+B a+b/2ab ab/a+b=3 a-2ab+b/2a-3ab+2b? 3(-ab+2a)-(3a-b) 3(-ab+2a)-(3a-b) 因式分解：a×a×a-2a×a×b+ab×b (ab(a^-2ab)-a^2b(a-3b))÷（3a^b） -2ab乘以(-a^+6a^b-3a+b) 18ab(a-b)^2-12a(b-a)^3 a^3-ab^2 =a （a^2 -b^2) =a(a+b)(a-b) (a-b)平方-2ab(b-a) a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快 3(-2ab+3a)-(2a-b)+6ab 3(-ab+2a)-(3a-b)+2ab 化简:(-2ab+3a)-(2a-b)+6ab 3（-ab+2a)-(3a-b）+3ab