If a= 4-√5, find the value of a^2+1/a^2
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we have
a= 4-√5
we have to find the value of (a²+1)/a²
now ,
a² = (4-√5)² = 16+5-8√5= 21-8√5
now
(a²+1)/a²= (21-8√5+1)/21-8√5
= (22-8√5)/21-8√5 answer
a= 4-√5
we have to find the value of (a²+1)/a²
now ,
a² = (4-√5)² = 16+5-8√5= 21-8√5
now
(a²+1)/a²= (21-8√5+1)/21-8√5
= (22-8√5)/21-8√5 answer
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