Q. If x = √(5 + 2√6), then x equals:
β
Correct Answer: (A)
√2 + √3
Explanation: Assume √(5+2√6)=√a+√b. Then a+b=5 and ab=6. The pair (2,3) satisfies these conditions. Hence x=√2+√3.
Explanation by: Mr. Dubey
Assume √(5+2√6)=√a+√b. Then a+b=5 and ab=6. The pair (2,3) satisfies these conditions. Hence x=√2+√3.