Найдите значение выражения:
1) $(\sqrt{7})^2$;
2) $(\sqrt{4,2})^2$;
3) $(-\sqrt{11})^2$;
4) $-(\sqrt{10})^2$;
5) $(2\sqrt{3})^2$;
6) $(\frac{1}{\sqrt{2}})^2$;
7) $(-\frac{\sqrt{3}}{2})^2$;
8) $(\frac{1}{2}\sqrt{14})^2$;
9) $(-0,3\sqrt{2})^2$.
$(\sqrt{7})^2 = 7$
$(\sqrt{4,2})^2 = 4,2$
$(-\sqrt{11})^2 = (-1)^2 * (\sqrt{11})^2 = 1 * 11 = 11$
$-(\sqrt{10})^2 = -1 * (\sqrt{10})^2 = -1 * 10 = -10$
$(2\sqrt{3})^2 = 2^2 * (\sqrt{3})^2 = 4 * 3 = 12$
$(\frac{1}{\sqrt{2}})^2 = \frac{1^2}{(\sqrt{2})^2} = \frac{1}{2}$
$(-\frac{\sqrt{3}}{2})^2 = (-1)^2 * (\frac{\sqrt{3}}{2})^2 = 1 * \frac{(\sqrt{3})^2}{2^2} = \frac{3}{4}$
$(\frac{1}{2}\sqrt{14})^2 = (\frac{1}{2})^2 * (\sqrt{14})^2 = \frac{1}{4} * 14 = \frac{1}{2} * 7 = \frac{7}{2} = 3\frac{1}{2}$
$(-0,3\sqrt{2})^2 = (-0,3)^2 * (\sqrt{2})^2 = 0,09 * 2 = 0,18$
Пожауйста, оцените решение