CUET Preparation Today
CUET
General Aptitude Test
Quantitative Reasoning
Algebra
If $x-\frac{1}{x}=11$, then $x^3-\frac{1}{x^3}$ is:
1474
1364
1188
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