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chandranshu

· started a discussion

· 1 Months ago

?

Question:
The value of \(\sqrt{5+2\sqrt{6}}\ \ \ -\cfrac{1}{\sqrt{5+2\sqrt{6}}}\)  is :
Options:
A) \(2\sqrt{2}\)
B) \(2\sqrt{3}\)
C) \(1+\sqrt{5}\)
D) \(\sqrt{5}-1\)
Solution:
Ans:(a)

Abhishek

· commented

· 1 Months ago

5 + 2squareroot6 is a perfect square of squareroot3 +squareroot2
Rationalize the second part and solve the equation.

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