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Question
Which of the following are quadratic equation in x?
`x^2-2/x=x^2`
Solution
`x^2-2/x=x^2`
⇒` x^2+2=x^3`
⇒`x^3-x^2-2=0`
`(x^3-x^2-2)` is not a quadratic polynomial.
`∴x^3-x^2-2=0` is not a quadratic equation.
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