If x-1/x=3,find the value of x²+1/x²
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Given:
x-1/x=3
To find:x^2+1/x^2
Now,
(x-1/x)^2=x^2+1/x^2-2
=>(3)^2=x^2+1/x^2-2
=>x^2+1/x^2=9-2
=>x^2+1/x^2=7
x-1/x=3
To find:x^2+1/x^2
Now,
(x-1/x)^2=x^2+1/x^2-2
=>(3)^2=x^2+1/x^2-2
=>x^2+1/x^2=9-2
=>x^2+1/x^2=7
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