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Algebra of Complex Numbers

If 5+2√6=I+...

Question

If $(5 + 2 \sqrt{6}) = I + f; n, I \in N$ and $0 \leq f < 1$ , then $I$ equals :

A

9

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B

8

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C

7

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D

6

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Solution

The correct option is A 9
$5 + 2 \sqrt{6} 5 + 2 (2.44) 5 + 4.88 9.88 = 9 + .88 I = 9$

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