2.9-bo'lim: Shaklda kvadratga tushiriladigan tenglamalar

Quyidagi tenglamalarning har birini yeching.

1. \({x^6} - 9{x^3} + 8 = 0\) Yechim
2. \({x^{ - 4}} - 7{x^{ - 2}} - 18 = 0\) Yechim
3. \(4{x^{\frac{2}{3}}} + 21{x^{\frac{1}{3}}} + 27 = 0\) Yechim
4. \({x^{10}} - 6{x^5} + 7 = 0\) Yechim
5. \(\displaystyle \frac{2}{{{x^2}}} + \frac{{17}}{x} + 21 = 0\) Yechim
6. \(\displaystyle \frac{1}{x} - \frac{{11}}{{\sqrt x }} + 18 = 0\) Yechim