If a=9+4 root 5 find a+1/a
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Answered by
2
Answer:
=-8√5
Step-by-step explanation:
a=9-4√5
1/a=1/(9-4√5)
=1*(9+4√5)/(9)2-(4√5)2
=(9+4√5)/81-80
=9+4√5
a-1/a=9-4√5-(9+4√5)
=9-4√5-9-4√5
=-8√5
Answered by
0
Answer:
According to me, the answer is zero
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