Question

if x-3=1/x then find x²+1/x²​

Answer 1

Answer:

x-3=1/x

x-1/x=3

squaring both sides

(x-1/x)^2= (3)^2

x^2+1/x^2-2x×1/x=3

x^2+1/x^2-2=3

x^2+1/x^2=3+2

x^2+1/x^2=5

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