Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If $ A +\frac{1}{A} = -1$, then find the value of $\frac{A^6+A^3-1}{A^9+A^3-1}$

Options:

0

2

-1

1

Correct Answer:

1

Explanation:

If $ A +\frac{1}{A} = -1$

Find the value of $\frac{A^6+A^3-1}{A^9+A^3-1}$

If $ A +\frac{1}{A} = -1$

Then, A3 = 1 always

Now put the value of A3 in $\frac{A^6+A^3-1}{A^9+A^3-1}$ = $\frac{1^2+1-1}{1^3+1^3-1}$ = 1