(x+1)(x-1)(x²-x+1)(x²+x+1)这一道题应该怎么算
问题描述:
(x+1)(x-1)(x²-x+1)(x²+x+1)这一道题应该怎么算
答
(x+1)(x-1)(x²-x+1)(x²+x+1)
=[(x+1)(x²-x+1)][(x-1)(x²+x+1)]
=(x^3+1)(x^3-1)
=x^6-1
就是立方公式
祝开心