Question

Va rog !!Urgentttt!!!Cate puteti din ele!! Dau coroana!!!​

Answer 1

Răspuns:

1.

$\sqrt{48} = 4 \sqrt{ 3}$

3.

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

$3 {}^{2} = 9 = > 8 < 9 = > 2 \sqrt{2 } < 3$

4.

$4 \sqrt{7} - 5 \sqrt{7} - 2 \sqrt{7} = - 3 \sqrt{7}$

5.

$\sqrt{8} + 5 \sqrt{2} = 2 \sqrt{2} + 5 \sqrt{2} = 7 \sqrt{2}$

6.

$(1 - \sqrt{3} )(2 - \sqrt{3} ) = - \sqrt{3} - 2 \sqrt{3} + \sqrt{9} = - 3 \sqrt{3} + 3 = - 1( \sqrt{3} - 1)$

7.

$\frac{ \sqrt{2} }{ \sqrt{7} } = \frac{ \sqrt{14} }{7}$

9.

$\sqrt{3} \times ( \sqrt{3} - \sqrt{2} ) + \sqrt{6} = \sqrt{9} - \sqrt{6} + \sqrt{6} = 3$