Question 3
SurdsIf √x − 6/√x = 1 find the value of x.
- A.9
- B.16
- C.25
- D.36
Show the answer and explanation
Answer: A (9)
Explanation
Let u = √x: u − 6/u = 1 gives u² − u − 6 = 0, (u − 3)(u + 2) = 0. Since u = √x > 0, u = 3 and x = 9.
If √x − 6/√x = 1 find the value of x.
Answer: A (9)
Let u = √x: u − 6/u = 1 gives u² − u − 6 = 0, (u − 3)(u + 2) = 0. Since u = √x > 0, u = 3 and x = 9.