If x=(4 - root 15), find the value of x +
1/x)
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Step-by-step explanation:
Given : x=(4 -√15)
Then, x + 1/x
=> (4 -√15) + 1/(4 -√15) (take LCM)
=> ((4 -√15)² + 1) / (4 -√15)
=> (4²+15 - 8√15 + 1) / (4 -√15)
=> (16 + 16 - 8√15) / (4 -√15)
=> (32 - 8√15) / (4 -√15)
( Further simplification will lead to rational number!)
I hope you get it...
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