634 Вправа 634Алгебра 8 клас Бевз 2025 · § 13 · стор. 127

634. Обчисли значення виразу.

а) ${\displaystyle \sqrt{\frac{1}{4}}=}$${\displaystyle \frac{1}{2}}$, бо ${\displaystyle {\left(\frac{1}{2}\right)}^2=}$${\displaystyle \frac{1}{4}}$;

б) ${\displaystyle \sqrt{\frac{9}{16}}=}$${\displaystyle \frac{3}{4}}$, бо ${\displaystyle {\left(\frac{3}{4}\right)}^2=}$${\displaystyle \frac{9}{16}}$;

в) ${\displaystyle \sqrt{\frac{4}{25}}=}$${\displaystyle \frac{2}{5}}$, бо ${\displaystyle {\left(\frac{2}{5}\right)}^2=}$${\displaystyle \frac{4}{25}}$;

г) ${\displaystyle \sqrt{\frac{25}{49}}=}$${\displaystyle \frac{5}{7}}$, бо ${\displaystyle {\left(\frac{5}{7}\right)}^2=}$${\displaystyle \frac{25}{49}}$;

ґ) ${\displaystyle 2\cdot \sqrt{49}=}$${\displaystyle 2\cdot 7=}$${\displaystyle 14}$;

д) ${\displaystyle 4\cdot \sqrt{64}=}$${\displaystyle 4\cdot 8=}$${\displaystyle 32}$;

е) ${\displaystyle 7\cdot \sqrt{100}=}$${\displaystyle 7\cdot 10=}$${\displaystyle 70}$;

є) ${\displaystyle 5\cdot \sqrt{144}=}$${\displaystyle 5\cdot 12=}$${\displaystyle 60}$.