Question

if a²-4a+1=0 then find
(1)a+1/a
(2)a-1/a
(3)a²-1/a²
(4)a²+1/a²
(5)a^8+1/a⁴
(6)a³-1/a³
(7)a³+1/a³
pls solve them step by step​

Answer 1

Answer:

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