Q.If $a - \frac{1}{a} = 1.5$ and $a^2 + \frac{1}{a^2} = 4.25$ , then $a^3 - \frac{1}{a^3} = ?$

8.125

7.875

6.25

7.125

The correct solution involves applying the fundamental concept to derive the final value step by step...

Already a member? Login here

Q.If a−1a=1.5a - \frac{1}{a} = 1.5a−a1​=1.5 and a2+1a2=4.25a^2 + \frac{1}{a^2} = 4.25a2+a21​=4.25, then a3−1a3=?a^3 - \frac{1}{a^3} = ?a3−a31​=?