Question

Responda as questões a seguir.

Answer 1

$a) a^{2} = b^{2} + c^{2} \\ x^{2} =(2 \sqrt{7}) ^{2} + (3 \sqrt{8}) ^{2} \\ x^{2} =2.7+3.2 \\ x^{2} =14+6 \\ x= \sqrt{20} \\ x=2 \sqrt{5}$