Question

if X equal to root 2 + 1 then find the value of x squared plus 1 by x square

Answer 1

=(root2)^2+1/root2+1
=3 (root2-1)/(root2+1)(root2-1)
=3 (root2-1)/2-1
=3(root2-1)/1
3 (root2-1)
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