Evaluation of expressions

If a2-3a+1=0, find

(i)a2+1/a2
(ii) a3+1/a3

Result

x1 =  7
x2 =  7
y1 =  18
y2 =  18

Solution:

Solution in text x1 =
Solution in text x1 = : Nr. 1

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Solution in text x2 =
Solution in text y1 =
Solution in text y2 =

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