(x-1)(x+1)(x2+2x)计算
问题描述:
(x-1)(x+1)(x2+2x)计算
答
=(x^2-1)(x^2+2x)=x^4+2x^3-x^2-2x
答
原式=(x^2-1)(x^2+2)=x^4+x^2-2
(x-1)(x+1)(x2+2x)计算
=(x^2-1)(x^2+2x)=x^4+2x^3-x^2-2x
原式=(x^2-1)(x^2+2)=x^4+x^2-2