Question

Ajutor, urgent!!!!!!​

Answer 1

Răspuns:

$\sqrt{ \frac{225}{49} } = \frac{ \sqrt{225} }{ \sqrt{49} } = \frac{15}{7}$

$\sqrt{2 \times \frac{7}{9} } = \sqrt{ \frac{25}{9} } = \frac{ \sqrt{25} }{ \sqrt{9} } = \frac{5}{3}$

$[ \sqrt{ \frac{300}{3} } = \frac{ \sqrt{300} }{ \sqrt{3} } = \frac{10 \sqrt{3} }{ \sqrt{3} } = 10$

$\frac{ \sqrt{1.96} }{ \sqrt{0.04} } = \frac{1.4}{0.2} = 7$

$\sqrt{ \frac{ {3}^{2} \times {10}^{2} \} }{ {5}^{2} } } = \sqrt{ {3}^{2} \times {2}^{2} } = \sqrt{36} = 6$

A={15/7;5/3;10;7;6} =>A∩N={10;7;6} =>C. 3 numere naturale