Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If $ m - \frac{1}{m} = 7$, then what is the value of $m^2 + (\frac{1}{m^2})$?

Options:

0

51

53

49

Correct Answer:

51

Explanation:

If $ m - \frac{1}{m} = 7$

Then what is the value of $m^2 + (\frac{1}{m^2})$

If $K-\frac{1}{K}=n$

then, $K^2+\frac{1}{K^2}$ = n2 + 2

$m^2 + (\frac{1}{m^2})$ = 72 + 2 = 51