Question

To represent the number of squares after steps, Diego and Jada wrote different equations. Diego wrote the equation f(n)= (n+1) 2 . Jada wrote the equation f(n) = n 2+ 2n + 1. Are either Diego or Jada correct? Explain your reasoning.

Answer 1

Both Diego and Jada are correct:

f(n) = (n + 1)² = n² + 2n + 1