Question

(3x+5y)²=
Alguem Me Diz a Resposta Por Favor?

Answer 1

(3x+5y)^2 = (3x)^2+ 2.3x.5y+ (5y)^2= 9x^2 + 30xy+ 25y^2

Answer 2

Olá :

Resolução :

$(3x+5y)^2 = (3x+5y)*(3x+5y) \\ \\ ~~~~~~~~~~~~~~=3^2x^2+15xy + 15xy +5^2y^2 \\ \\ ~~~~~~~~~~~~~~\boxed{\boxed{=9x^2 + 30xy+25y^2}}$

Bons Estudos !!