Question

ei ei ei me ajuda ae namoral​

Answer 1

Vamos lá:

A) x = 5.

$x^{2} =(4)^{2}+(3)^{2} \\x=\sqrt{16+9} \\x=\sqrt{25} =5$

B) x = 5.

$x^{2} =(4)^{2} +(3)^{2} \\x= \sqrt{25} \\x=5$

C) x = raiz de 5.

$x^{2} =(2)^{2} +(1)^{2} \\x^{2} =4+1\\x=\sqrt{5}$

D) x = 12.

$15^{2} =(9)^{2} +x^{2} \\225=81+x^{2} \\x^{2} =225-81\\x=\sqrt{144} \\x=12$