Question

Na figura abaixo, qual o valor de x + y ?

Answer 1

$\large\boxed{\begin{array}{l}\sf y=9+3\\\sf y=12\\\sf x^2=y\cdot3\\\sf x^2=12\cdot3\\\sf x^2=36\\\sf x=\sqrt{36}\\\sf x=6\\\sf x+y=6+12\\\sf x+y=18\end{array}}}$