Question

If x= 2-√3 then find x-1/x whole sqaure

Answer 1

(2-√3-1/2-√3) ^2

(1-√3) ^2/4+3-4√3

1+3-2√3/7-4√3

4-2√3/7-4√3

Rationalise...!!

(4-2√3) (7+4√3) /(7-4√3) (7+4√3)

28+16√3-14√3-24/(7^2-4√3^2)

4-2√3/49-48

4-2√3

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