化简(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)

问题描述:

化简(3+1)(3的平方+1)(3的四次方+1)(3的八次方+1)

(3+1)(3^2+1)(3^4+1)(3^8+1)
=(1/2)*(3-1)*(3+1)(3^2+1)(3^4+1)(3^8+1)
=(1/2)*(3^2-1)(3^2+1)(3^4+1)(3^8+1)
=(1/2)*(3^4-1)(3^4+1)(3^8+1)
=(1/2)*(3^8-1)(3^8+1)
=(1/2)*(3^16-1)
=(3^16-1)/2