a) $\sqrt{(-5^{2})}$ = $\sqrt{(5^{2})}$ = 5
b) $\sqrt{(5-2)^2}$ = 5-2 = 3
c) $\sqrt{(2- căn 5 } $ = 2 - $\sqrt{5}$ ≈ 0,236
d) $\sqrt{9}$ +4$\sqrt{5}$ = 3+4$\sqrt{5}$ ≈ 11,9442
e) $\sqrt{6}$ + 2$\sqrt{5}$ ≈ 6,9216
f) $\sqrt{8}$ - 2$\sqrt{7}$ ≈ -2,463
g) $\sqrt{11}$ - 2$\sqrt{10}$ + $\sqrt{11}$ + 2$\sqrt{10}$ = $\sqrt{11}$ + $\sqrt{11}$ = 2$\sqrt{11}$ ≈ 6,6332
~Answer by oospcreeper2006~
