a^2+3a+4b^2+6b-18+4ab
计算(3a-2b)(9a*a+6ab+4b*b)-(3a+2b)(9a*a-6ab+4b*b)
a³+a²b-(4a²b+3ab²)+b³+6ab²+2b&
合并同类项: -5a^b+6ab^-4ab-2a^b+4ab+3
合并同类项:-5a^b+6ab^-4ab-2a^b+4ab+3
若a+b=3,ab=-2,求(5a-5b-ab)-(4a-6b-3ab)
2A+4+3AB+6B
已知:a-b=4,ab=3,求多项式(2a+5b-3ab)-(a+6b-ab)-(2ab+2b-2a)的值
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
(-2ab^2)^3*3(a^2b)^2+4a^3b^2*18a^4b^6
-2ab(3a^2-2ab-4b^2) (2b-a)b-(2a-b)a
(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3
已知a-b=5,ab=-4,求代数式5a^2b(a-b)-3ab(b-a)^2+5ab^2(b-a)的值