(2a-5b)(3a^2-2ab+b^2)计算,急,
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(2a-5b)(3a^2-2ab+b^2)计算,急,(2a-5b)(3a^2-2ab+b^2)计算,急,(2a-5b)(3a^2-2ab+b^2)计算,急,(2a-5b)(3a^2-2ab+b^2)=
(2a-5b)(3a^2-2ab+b^2)计算,急,
(2a-5b)(3a^2-2ab+b^2)
计算,急,
(2a-5b)(3a^2-2ab+b^2)计算,急,
(2a - 5b)(3a^2 - 2ab + b^2)
= 6a^3 - 4a^2b + 2ab^2 - 15a^2b + 10ab^2 - 5b^3
= 6a^3 + ( -4a^2b - 15a^2b) + (2ab^2 + 10ab^2) - 5b^3
= 6a^3 - 19a^2b + 12ab^2 - 5b^3
(a-b)^3+2ab(a-b)
(a-b)(a^5+a^4b+a^3b^2+ab^4+b^5)bggg
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/2ab
2AB/A+B
a+b/2ab
1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=?
-ab(a^2b^5-ab^3-b)
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
6a-5b+2ab+5b-3a
化简:1.3a+2b-5a-b 2.3(-ab+2a)-2(3a-ab)
(a-b)(3ab+2a²b-b³)
已知a,b满足a+b=5,a-b=1,求ab,a^2+b^2-3ab
ab/a+b=3 a-2ab+b/2a-3ab+2b?
ab^3+b^2+b-a+1
(a-b)平方-2ab(b-a)
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
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