Question

(a+b)(a^-ab+b^)怎么计算，要详细，谢谢

Answer 1

(a+b)(a^-ab+b^)
=a³-a²b+ab²+a²b-ab²+b³
=a³+b³

Answer 2

(a＋b)(a²－ab＋b²)
=a(a²－ab＋b²)＋b(a²－ab＋b²)
=a³－a²b＋ab²＋ba²－ab²＋b³
=a³＋b³