1 . x+1x=5

• A. $1$
• B. $3\sqrt{5}$
• C. $5$
• D. $2\sqrt{5}$

Answer: Option D

Explanation:

2 . x+1x=5

• A. $5$
• B. $2$
• C. $5\sqrt{2}$
• D. $2\sqrt{5}$

Answer: Option D

Explanation:

3 . x+1x=5, x3+1x3=?

• A. 115
• B. 110
• C. 125
• D. 225

Answer: Option B

Explanation:

4 . x+1x=5

• A. $\frac{1}{4}$
• B. 4
• C. -4
• D. $\frac{1}{6}$

Answer: Option D

Explanation: