求f（x）=x^5+x⁴+x³+x²+x+1 当x=5时的值,用等比数列知识去解.

求f（x）=x^5+x⁴+x³+x²+x+1 当x=5时的值,用等比数列知识去解.
求f（x）=x^5+x⁴+x³+x²+x+1 当x=5时的值,用等比数列知识去解.

求f（x）=x^5+x⁴+x³+x²+x+1 当x=5时的值,用等比数列知识去解.
f（x）=x^5+x⁴+x³+x²+x+1
=(x^6-1)/(x-1) x=5
=(5^6-1)/4
=3096