Question

aparecendo o quadrado da soma (2+y)2​

Answer 1

(2 + y)²

(2 + y)(2 + y)

4 + 2y + 2y + y²

4 + 4y + y²

y² + 4y + 4

Answer 2

Resposta:

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

a^2+-2ab+b^2