Observe the following lattice diagram, observe the following lattice diagram and the corresponding equation, and explore the problems Please guess 1 + 3 + 5 + 7 + 9. +(2n-1)+(2n+1)=? Please use the above rule to calculate

Observe the following lattice diagram, observe the following lattice diagram and the corresponding equation, and explore the problems Please guess 1 + 3 + 5 + 7 + 9. +(2n-1)+(2n+1)=? Please use the above rule to calculate

Hello!
1+3+5+7+9+… +(2n-1)+(2n+1) = (n+1)²