15^2=1*(1+1)*100+5^2=225 25^2=2*(2+1)*100+5^2=225 35^2=3*(3+1)*100+5^2=225 第n个等式(n为整数)为?

2024-12-03 06:07:55
推荐回答(3个)
回答1:

100n(n+1)+25=100n²+100n+25

回答2:

100n*(n+1)+25

回答3:

我也很急