116° Вправа 116Алгебра 8 клас Тарасенкова 2025 · § 3 · стор. 38

116. Зведіть дріб 1/(2a) до знаменника:

1) ${\displaystyle \frac{1^{\mathrm{\setminus }2}}{2a}=}$${\displaystyle \frac{1\cdot 2}{2a\cdot 2}=}$${\displaystyle \frac{2}{4a}}$;

2) ${\displaystyle \frac{1^{\mathrm{\setminus }4}}{2a}=}$${\displaystyle \frac{1\cdot 4}{2a\cdot 4}=}$${\displaystyle \frac{4}{8a}}$;

3) ${\displaystyle \frac{1^{\mathrm{\setminus }a}}{2a}=}$${\displaystyle \frac{1\cdot a}{2a\cdot a}=}$${\displaystyle \frac{a}{2a^2}}$;

4) ${\displaystyle \frac{1^{\mathrm{\setminus }3a}}{2a}=}$${\displaystyle \frac{1\cdot 3a}{2a\cdot 3a}=}$${\displaystyle \frac{3a}{6a^2}}$;

5) ${\displaystyle \frac{1^{\mathrm{\setminus }5a^2}}{2a}=}$${\displaystyle \frac{1\cdot 5a^2}{2a\cdot 5a^2}=}$${\displaystyle \frac{5a^2}{10a^3}}$;

6) ${\displaystyle \frac{1^{\mathrm{\setminus }7a^3}}{2a}=}$${\displaystyle \frac{1\cdot 7a^3}{2a\cdot 7a^3}=}$${\displaystyle \frac{7a^3}{14a^4}}$.