x=9-4√5,then find
X+1/x
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9-4 root 5+1 by 9-4 root 5
that equals to ((9- 4root 5) square+1) by 9-4 root 5 equals to 81+80-72 root5+1 equals to
162-72 root 5 by 9-4root 5 take common and cancel it with numerator
answer will be 9-4 root 5
that equals to ((9- 4root 5) square+1) by 9-4 root 5 equals to 81+80-72 root5+1 equals to
162-72 root 5 by 9-4root 5 take common and cancel it with numerator
answer will be 9-4 root 5
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