(a+b)(a^2-ab+b^2) 怎么算
1个回答
(a+b)(a^2-ab+b^2)
=a(a²-ab+b²)+b(a²-ab+b²)
=a³-a²b+ab²+ba²-ab²+b³
=a³+b³
相关问题
(-a²b+7ab)•(a²b-2ab)怎么算
ab=(a-2b)^2怎么算
ab-(2ab-3a^2b)怎么算?
怎么算已知a/b=2,求(a*a-ab+b*b)/(a*a+b*b)
3ab^2-5a^b怎么算
a-2ab+b的系数怎么算?
(2b+a)(2a+b)怎么算?
a+2b=2√2ab 怎么算出等于2√2ab的?
(-2a^3b)^2(0.5ab^2)^2怎么算
16(a-2b)²-(a+b)怎么算,