Question

me ajuda ai galera,tá difícil ​

Answer 1

a) $x^2=10^2+8^2$

$x^2=100+64$

$x^2=164$

$x=\sqrt{164}$

$x=\sqrt{4.41}$

$x=2\sqrt{41}$

b) $x^2+9^2=12^2$

$x^2+81=144$

$x^2=144-81$

$x^2=63$

$x=\sqrt{63}$

$x=\sqrt{9.7}$

$x=3\sqrt{7}$

c) $x^2+16^2=20^2$

$x^2+256=400$

$x^2=400-256$

$x^2=144$

$x=\sqrt{144}$

$x=12$

d) $x^2+x^2=18^2$

$2x^2=324$

$x^2=\frac{324}{2}$

$x^2=162$

$x=\sqrt{162}$

$x=\sqrt{81.2}$

$x=9\sqrt{2}$

e) $x^2=(\sqrt{16})^2+(\sqrt{25})^2$

$x^2=16+25$

$x^2=41$

$x=\sqrt{41}$