(x²-5)²+2(x²-5)+1求因式分解

问题描述:

(x²-5)²+2(x²-5)+1求因式分解

(x^2-5)^2加2(x^2-5)加1
=(x^2-5加1)^2
=(x^2-4)^2
=(x-2)^2×(x加2)^2