Question

Determine o valor de x e y ​

Answer 1

Resposta:

$a = m + n \\ a = 9 + 3 \\ a = 12 \\ b ^{2} = a.n \\ b ^{2} = 12 \times 3 \\ b ^{2} = 36 \\ b = \sqrt{36} \\ b = 6$