If $K+\frac{1}{K}=3$, then what is the v

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If $K+\frac{1}{K}=3$, then what is the value of $\frac{1}{K^3}+K^3$ ?

Options:

Correct Answer:

Explanation:

If $K+\frac{1}{K}=3$

what is the value of $\frac{1}{K^3}+K^3$

$K+\frac{1}{K}=3$

then, $\frac{1}{K^3}+K^3$ = 3³ - 3 × 3 = 18