If a+(1/a) =3, find 4a/(a2+a+1)
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a+1/a = 3 - given
a= 3-1/a
a= 3a-1/a ( taking LCM and solving) - 1
a2= 3a-1 -2
substitute the values in 4a/a2+a+1
you will get your answer easily
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answer for the given problem is given
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