Respuesta :

11x11 => (1 +1)(1 +1) = 2x2 =4 

12x12 => (1 +2)(1 +2) = 3x3 = 9 

13x13 => (1 +3(1 +3) = 4x4 = 16
babydollari
the answer would be 169 multiply 13x13 and u get 169