If and , what is the value of a and b?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. a = 9, b = 4.
√a + √b = 5 ...(1)
√a – √b = 1 ...(2)
Add (1) and (2): 2√a = 6
⇒ √a = 3
⇒ a = 9
Subtract (2) from (1): 2√b = 4
⇒ √b = 2
⇒ b = 4