Practicing Success
Practicing Success
CUET Preparation Today
If $a+\frac{1}{a}=5$, then what is the value of $a^3+\frac{1}{a^3}$ ? |
110 15 105 -10 |
110 |
If $a+\frac{1}{a}=5$ then, $a^3+\frac{1}{a^3}$. a3 + \(\frac{1}{a^3}\) = (a + \(\frac{1}{a}\))3 – 3(a + \(\frac{1}{a}\)) a3 + \(\frac{1}{a^3}\) = 53 – 3 × 5 = 110 |
