x的值是多少?
一般地,x≠1,有：
(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)(x^16+1)
=(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)(x^16+1)/(x-1)
=(x^2-1)(x^2+1)(x^4+1)(x^8+1)(x^16+1)/(x-1)
从前往后用平方差公式
=(x^32-1)/(x-1)
然后代入x值