Question

Даю 30 баллов решите пж

Answer 1

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

$- 3\sqrt{11} = - \sqrt{ {3}^{2} \times 11} = \\ = - \sqrt{99}$

$0.2 \sqrt{5} = \frac{1}{5} \sqrt{5} = \sqrt{ \frac{1}{25} \times 5} = \sqrt{ \frac{1}{5} }$

$\frac{1}{3} \sqrt{54} = \sqrt{ \frac{54}{9} } = \sqrt{6}$

$\frac{3}{5} \sqrt{250} = \sqrt{ \frac{9}{25} \times 250 } = \sqrt{90}$

$- 4 \sqrt{3} = - \sqrt{16 \times 3} = - \sqrt{48}$