化简(1+根号x)^5+(1-根号x)^5用二项式定理算
问题描述：
化简(1+根号x)^5+(1-根号x)^5用二项式定理算
答
(1+√x)^5=1+5√x+10√x^2+10√x^3+5√x^4+√x^5
(1-√x)^5=1-5√x+10√x^2-10√x^3+5√x^4-√x^5
所以:(1+√x)^5+(1-√x)^5
=(1+√x)^5+(1-√x)^5
=2+20x+10x^2