The model represents a perfect square monomial.
*72
+
+42
What equation is represented by the model?
(2x)2 = 4x2
(2x2)2 = 4x4
(4x)2 = 8x2
(4x2)2 = 8x8

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

Ithink it's the first one ( let me know if it right)