Practicing Success
Practicing Success
CUET Preparation Today
If x - \(\frac{2}{x}\) = 4, then find x2 + \(\frac{4}{x^2}\). |
10 20 30 40 |
20 |
Squar on both side, we get (x - \(\frac{2}{x}\))2 = (4)2 x2 + \(\frac{4}{x^2}\) - 2 × x × \(\frac{2}{x}\) = 16 x2 + \(\frac{4}{x^2}\) = 20 |
