Practicing Success
Practicing Success
CUET Preparation Today
If a - \(\frac{1}{a - 4}\) = 11 Then find , (a - 4)3 - \(\frac{1}{(a - 4)^3}\) |
364 370 0 170 |
364 |
Given = a - \(\frac{1}{a - 4}\) = 11 By subtracting 4 on both sides we get, (a - 4) - \(\frac{1}{a - 4}\) = 11 - 4 = 7 (a - 4)3 - \(\frac{1}{(a - 4)^3}\) = 73 + 3 × 7 = 364
Note - if x - \(\frac{1}{x}\) = a then x3 - \(\frac{1}{x^3}\) = a3 + 3a |
