(-2ab+3a)-(2a-b)+6ab是多少?先去括号,再合并同类项.注意,前面没有3的哦!

3(-2ab+3a)-(2a-b)+6ab 化简:(-2ab+3a)-(2a-b)+6ab a^2-3ab+b^2/ab=( )/ab-3 a^2-3ab+b^2/ab=( )/ab -3 计算3ab(2ab^2-ab-b^2)-6ab(a^2-2ab-b^2) -2ab乘以(-a^+6a^b-3a+b) a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快 (a-b)^3+2ab(a-b) 分解因式3a^2b-6ab^2-ab 3a²-ab+6ab-2b²=? (a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6) a+b/2ab 2AB/A+B a+b/2ab a^2b^2-7ab+10.3a^3b-6a^2b-45ab. 3a²b-[2ab²-6(ab-1/2a²b)+4ab]-2ab ab/a+b=3 a-2ab+b/2a-3ab+2b? a+b=4,ab=-2,求代数式（4a-3b-2ab)-(a-6b+ab)