Question

Ifa = 2 +v3, then find the value of a -1/a
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Answer 1

Answer:a=2+root 3- equation 1

Then 1/a= 1/2+root3 so we rationalize thi s term 1/2+root3*2-root3/2-root3

So we get 2-root3

a+1/a= 2+ root3 - (2-root3)

And we get 2root3

Step-by-step explanation: