If a^2+1/a^2=7,find (a+1/a)
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0
Answer:
a+1/a=√{a²+1/a²+2}=√(7+2) =√9=3
Answered by
0
Answer:
+ 1/ = 7
+ 1/ = 9-2
+ 1/ +2 = 9
= 9
=
(a+1/a) = ± 3
hence a+1/a = ±3
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