Question

Сравните: -3√7 и -5√7

Answer 1

Ответ:

$- 3 \sqrt{7} = - \sqrt{9 \times 7} = - \sqrt{63}$

$- 5\sqrt{7} = \sqrt{25 \times 7} = - \sqrt{175}$

$- \sqrt{63} > - \sqrt{175}$

$- 3 \sqrt{7} > - 5 \sqrt{7}$