If x is equal to 9 + 4 root 5 find X + 1 by X
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Answered by
1
Step-by-step explanation:
x=9+4rt5
1/x=1/(9+4rt5)
=(9-4rt5)/(9-4rt5)(9+4rt5) ....... rationalizing the denominator
=(9-4rt5)/(81-16*5)
=(9-4rt5)/(81-80)
=9-4rt5
So, x+1/x=9+4rt5+9-4rt5
=18
Answered by
0
Answer is 18 eighteen
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