Question

valendo 10 pontos ajudem

Answer 1

$17^{2}$ = $8^{2}$ + $y^{2}$
289 = 64 + $y^{2}$
225 = $y^{2}$
y = 15

$15^{2}$ = $9^{2}$ + $x^{2}$
225 = 81 + $x^{2}$
$x^{2}$ = 144
x = 12