313. Решите уравнение:

Решение:

1. \( x^2 = 36 \) \( → x = ±\sqrt{36} = ±6 \).
2. \( x^2 = 0,49 \) \( → x = ±\sqrt{0.49} = ±0.7 \).
3. \( x^2 = 121 \) \( → x = ±\sqrt{121} = ±11 \).
4. \( x^2 = 11 \) \( → x = ±\sqrt{11} \).
5. \( x^2 = 8 \) \( → x = ±\sqrt{8} = ±2\sqrt{2} \).
6. \( x^2 = 2,5 \) \( → x = ±\sqrt{2.5} = ±\sqrt{\frac{5}{2}} = ±\frac{\sqrt{10}}{2} \).

Ответ: а) \( x = ±6 \); б) \( x = ±0.7 \); в) \( x = ±11 \); г) \( x = ±\sqrt{11} \); д) \( x = ±2\sqrt{2} \); е) \( x = ±\frac{\sqrt{10}}{2} \).