Question

if y-1/y=2 then y^2 + 1/y^2 = ? can someone solve and answer

Answer 1

Answer:

2

Step-by-step explanation:

y-1/y=2

y-1=2y

y-1-2y=0

y-2y=1

-y=1

y=-1

y²+1/y²

=-1²+1/-1²

=1+1/1

=2/1

=2

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