Practicing Success
Practicing Success
CUET Preparation Today
If $ x^2 +\frac{1}{x^2}=4 $, then what is the value of $x^4 +\frac{1}{x^4}$. |
16 14 12 20 |
14 |
If $K+\frac{1}{K}=n$ then, $K^2+\frac{1}{K^2}$ = n2 – 2 If $ x^2 +\frac{1}{x^2}=4 $ Then, $x^4 +\frac{1}{x^4}$ = 42 – 2 = 14 |
