Question

please solve this 19th question correctly and get like rate and follow​

Answer 1

Answer:

option B

Step-by-step explanation:

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Answer 2

Answer:

$2 - \sqrt{3}$

Step-by-step explanation:

QUESTION: if x=2+ root 3 then (1/x) is equal to

SOLUTION:

$x = 2 + \sqrt{3} \: \: \: \: \: then \: \: \: \: \frac{1}{x} \\ \frac{1}{x} = \frac{1}{2 + \sqrt{3} } \\ by \: rationalisation \\ \frac{1}{2 + \sqrt{3} } \times \frac{2 - \sqrt{3} }{2 - \sqrt{3} } = \frac{2 - \sqrt{3} }{4 - 3} \\ = 2 - \sqrt{3}$

so 1/x=

$2 - \sqrt{3}$

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