If (x-1/x )=√(21), the value of (x2+1x2 ) (x+1/x ) is

ABC26GN1269 · Simplification

Subject: General Aptitude · Chapter: Simplification · Exam: · Marks: · Difficulty:

If $\left(x-\frac{1}{x}\right)=\sqrt{21}$, the value of $\left(x^{2}+\frac{1}{x^{2}}\right)\left(x+\frac{1}{x}\right)$ is

(a)42

(b)63

(c)115

(d)120

(e)125

Answer

Answer (as printed): C

Explanation

No explanation was printed for this question.