plzzzzzzzzzzz solve it
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x=3+2root2
1/x =1/(3+2root2) rationalise it
we get 3-2root2
so x-1/x. =3+2root2-(3-2root2)
=4root2. Ans.
1/x =1/(3+2root2) rationalise it
we get 3-2root2
so x-1/x. =3+2root2-(3-2root2)
=4root2. Ans.
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