CUET Preparation Today
CUET
General Test
Quantitative Reasoning
Algebra
If $ x^2 +\frac{1}{x^2}=4 $, then what is the value of $x^4 +\frac{1}{x^4}$.
16
14
12
20
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
