Question

If x= 1 divided by
5 - 2 root 6
then find the value of x - 5.​

Answer 1

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$x = \frac{1}{5 - 2 \sqrt{6} } \\ x = \frac{1}{5 - 2 \sqrt{6} } \times \frac{5 + 2 \sqrt{6} }{5 + 2 \sqrt{6} } \\ = \frac{5 + 2 \sqrt{6} }{25 - 24} \\ = 5 + 2 \sqrt{6} \\ \therefore \: \: \: x - 5 = 5 + 2 \sqrt{6} - 5 = 2 \sqrt{6}$

Answer 2

Answer:

answer is 2 root 6

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