Question

if x-1/x=√5, find the value of
(i) x²+1/x²
(ii) x+1/x
(iii) x³+1/x³
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Answer 1

Answer:

check the image above please.

Answer 2

Answer:

1)if x=-1x²+1/x²=(-1)+1/(-1)²=2

if x=root 5 =(root 5)²+1/(root5)²=26/5