5+5^2+5^3+5^4+5^5+5^6
5+5^2+5^3+5^4+5^5+5^6
=(5-5*5^6)/芹培好(1-5)
=(5-5^7)/嫌铅(-4)
=(5^7-5)/中纤4
=19530
同底数，不同指数幂加法法则
5+5^2+5^3+5^4+5^5+5^6
5+5^2+5^3+5^4+5^5+5^6
=(5-5*5^6)/芹培好(1-5)
=(5-5^7)/嫌铅(-4)
=(5^7-5)/中纤4
=19530
5+5^2+5^3+5^4+5^5+5^6
5+5^2+5^3+5^4+5^5+5^6
=(5-5*5^6)/芹培好(1-5)
=(5-5^7)/嫌铅(-4)
=(5^7-5)/中纤4
=19530