(a+b)^3=a^3+b^3+3a^2b+3ab^2的证明过程

2024-12-17 02:16:49
推荐回答(1个)
回答1:

(a+b)^3
=(a+b)²*(a+b)
=(a²+2ab+b²)*(a+b)
=a三次方+2a²b+ab²+a²b+2ab²+b三次方
=a三次方+b三次方+3a²b+3ab²
得证