Question

URGENT VA ROG PRIMELE 5​

Answer 1

$\sqrt{26}$ : $\sqrt{13}$-2$\sqrt{10$:$\sqrt{5}$=$\sqrt{2}$-2$\sqrt{2}$=-1$\sqrt{2}$=-$\sqrt{2}$

2$\sqrt{8}$ x ( $\sqrt{200}$-$\sqrt{648}$+$\sqrt{162}$)=2$\sqrt{8}$ x $\sqrt{2}$=2x2$\sqrt{2}$x$\sqrt{2}$=2x2x2=4x2=8

$\sqrt{200}$=10$\sqrt{2}$

$\sqrt{648}$=18$\sqrt{2}$

$\sqrt{162}$=9$\sqrt{2}$

$\sqrt{8}$=2$\sqrt{2}$

$\sqrt{2}$ x$\sqrt{2}$=$\sqrt{4}$=2

$\sqrt{100}$+$\sqrt{49}$-$\sqrt{64}$=10+7-8=17-8=9

$\sqrt{9+16+144}$=$\sqrt{169}$=13

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