Question

alguem responde pfv desenvola ;
(x+3y)²

Answer 1

Resposta:

(x+3y)²

$x^{2}$ + 2x × 3y + $(3y)^{2}$

$x^{2}$ + 6xy + $9y^{2}$

Answer 2

Resposta:

(x² + 2x • 3y + 9y²)

(x² + 6xy + 9y²)