Practicing Success
If $x-\frac{1}{x}=11$, then $x^3-\frac{1}{x^3}$ is: |
1474 1364 1188 1298 |
1298 |
If x + \(\frac{1}{x}\) = n then, $x^3 +\frac{1}{x^3}$ = n3 - 3 × n If $x-\frac{1}{x}=11$ then $x^3-\frac{1}{x^3}$ = 113 - 3 × 11 $x^3-\frac{1}{x^3}$ =1331 - 33 = 1298 |