Practicing Success
Practicing Success
CUET Preparation Today
If (\(\sqrt {x}\))2 + \(\frac{1}{(\sqrt {x})^2}\) = 9 Find x2 - \(\frac{1}{×^2}\) |
9\(\sqrt {77}\) 11\(\sqrt {77}\) 77\(\sqrt {11}\) 81 |
9\(\sqrt {77}\) |
Formula → (a + b) (a - b) = a2 - b2 Given, (\(\sqrt {x}\))2 + \(\frac{1}{(\sqrt {x})^2}\) = 9 x - \(\frac{1}{x}\) = \(\sqrt {9^2 - 4}\) = \(\sqrt {77}\) x2 - \(\frac{1}{×^2}\) = 9 × \(\sqrt {77}\) = 9\(\sqrt {77}\) |
