(a-b)^3+2ab(a-b)
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(a-b)^3+2ab(a-b)(a-b)^3+2ab(a-b)(a-b)^3+2ab(a-b)原式=(a-b)[(a-b)²+2ab]=(a-b)(a²-2ab+b²+
(a-b)^3+2ab(a-b)
(a-b)^3+2ab(a-b)
(a-b)^3+2ab(a-b)
原式=(a-b)[(a-b)²+2ab]
=(a-b)(a²-2ab+b²+2ab)
=(a-b)(a²+b²)
(a-b)^3+2ab(a-b)
(a-b)(3ab+2a²b-b³)
ab/a+b=3 a-2ab+b/2a-3ab+2b?
ab^3+b^2+b-a+1
a+b/2ab
2AB/A+B
a+b/2ab
-2ab乘以(-a^+6a^b-3a+b)
18ab(a-b)^2-12a(b-a)^3
(ab(a^-2ab)-a^2b(a-3b))÷(3a^b)
a^3-ab^2 =a (a^2 -b^2) =a(a+b)(a-b)
3(-ab+2a)-(3a-b)
3(-ab+2a)-(3a-b)
已知3a*a+ab-2b*b=0(a不等于0,b不等于0),求a/b-b/a-(a*a+b*b)/ab的值.
(a-b)(a^5+a^4b+a^3b^2+ab^4+b^5)bggg
b/a+a/b=3,求2ab/(a*a+b*b)-(3a*a+ab+3b*b)/2ab的值
已知a*a-ab=3,ab+b*b=-5,求代数式a*a+b*b与a*a-2ab-b*b的值
(a-b)^3-4ab(b-a)