①-2ab(3a²-2ab-4b²)
3a²b+ab²-2a²b²-3ab²-3a²b+4ab
化简 3a²-[2ab-2(ab-3/2a²b)+ab]+4ab²
化简求值:3a²b-[2ab²-2(-a²b+4ab²)]-5ab²,
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
①-2ab(3a²-2ab-4b²)
已知ab²=6,求ab(a^2b^5-ab^3-b)的值
a³+a²b-(4a²b+3ab²)+b³+6ab²+2b&
化简:① a²-3ab+4b²-(2b²-3ab-3a²)
计算:2/3a²-1/2ab+3/4a²+ab-b²
3ab+3b²/b(a²+2ab+b²) ×a²-b²/a-b ÷b/
①-2a²(二分之一ab+b²)-5a(a²b-ab²)
(6a²-2a²)-(-a²+2ab+b²)-(a²-4ab+3b