if x square =11 +2 root 30, find 1 by x
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https://brainly.in/question/1293249
find the square root of 11 + 2 root 30 - Brainly.in
find the square root of 11 + 2 root 30 - Brainly.in
Answered by
1
Answer:
11-2√30
Step-by-step explanation:
if :
x=11+2√30
then,
1/x=1/(11+2√30)
now rationalizing the denominator,we get
=> 1/(11+2√30) = 1/(11+2√30) * (11-2√30)/(11-2√30)
=> 11-2√30/{(11)^2-(2√30)^2}. * [by applying (a+b)(a-b)=(a^2-b^2)]
=> 11-2√30/{121-(4*30)}
=>11-2√30/(121-120)
=> 11-2√30/1
=> 11-2√30
Therefore,
1/x=11-2√30
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