If x = √7, determine the value of x + 1/x.
2025
If x = √7, determine the value of x + 1/x.
- A.
8√7/7
- B.
7√7/8
- C.
7√7/9
- D.
9√7/7
Attempted by 19 students.
Show answer & explanation
Correct answer: A
For x = sqrt7, x + 1/x = sqrt7 + 1/sqrt7 = (7 + 1)/sqrt7 = 8/sqrt7 = 8sqrt7/7.