Question

Binômio ( 2x + y )² =

Answer 1

(2 x + y)² = (2 x + y ) ( 2 x + y) =  4 x² + 4 x y + y²

Answer 2

$(2 x + y) ^{2} \\ (2 x + y ) ( 2 x + y) = 4 x^{2} + 4 x y + y ^{2}$