3^2-1^2=4x2;4^2-2^2=4x3;5^2-3^2=4x4第n个式子为
问题描述:
3^2-1^2=4x2;4^2-2^2=4x3;5^2-3^2=4x4第n个式子为
答
(n+2)^2-n^2=4*(n+1)
3^2-1^2=4x2;4^2-2^2=4x3;5^2-3^2=4x4第n个式子为
(n+2)^2-n^2=4*(n+1)