Question

Am nevoie făcut comlpet va rog si cu exemplu​

Answer 1

I.

1.

$\sqrt{2} + \frac{4}{ \sqrt{2} } - \sqrt{72}$

$\sqrt{2} + 2 \sqrt{2} - 6 \sqrt{2}$

$- 3 \sqrt{2}$

2.

$3 \sqrt{3} = \sqrt{3 \times 3 {}^{2} } = \sqrt{3 \times 9} = \sqrt{27}$

$2 \sqrt{7} = \sqrt{7 \times 2 {}^{2} } = \sqrt{7 \times 4} = \sqrt{28}$

$\sqrt{27} < \sqrt{28}$

II.

1-a

$\frac{x}{2 \sqrt{5} } = \frac{15}{10}$

$\frac{ \sqrt{5x} }{10} = \frac{15}{10}$

$\sqrt{5x} = \sqrt{15}$

$x = \sqrt{3}$

6-a

$\frac{2 \sqrt{3} }{3 \sqrt{2} }$

$\frac{2 \sqrt{3} }{3 \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} }$

$\frac{2 \sqrt{6} }{3 \times 2}$

$\frac{2 \sqrt{6} }{6}$

$\frac{ \sqrt{6} }{3}$