Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If $x+\frac{1}{x}=8$, then find the value of $\frac{5}{x^2-8 x+2}$.

Options:

3

4

0

5

Correct Answer:

5

Explanation:

If $x+\frac{1}{x}=8$

then, x2 + 1 = 8x

$\frac{5}{x^2-8 x+2}$ = ?

Putting the value of 8x in the given equation = 

$\frac{5}{x^2-x^2 - 1+2}$ = 5