Question

Памогите Алгебра сегодня.

Answer 1

Ответ:

$( \sqrt{7} + \sqrt{12} ) \times ( \sqrt{12} - \sqrt{7} ) - \sqrt{121} = - 6$

$( \sqrt{7} + \sqrt{12} ) \times ( \sqrt{12} - \sqrt{7} ) - \sqrt{121 } = - 6 \\ ( \sqrt{7} + 2 \sqrt{3} ) \times (2 \sqrt{3} - \sqrt{7} ) - 11 = (2 \sqrt{3} + \sqrt{7} ) \times (2 \sqrt{3} - \sqrt{7} ) - 11 = 4 \times 3 - 7 - 11 = 12 - 7 - 11 = - 6$