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Question
Check whether the following are quadratic equations: `x^2 + (1)/(x^2) = 3, x ≠ 0`
Solution
`x^2 + (1)/(x^2) = 3, x ≠ 0`
x4 + 6 = 3x2
x4 - 3x2 + 6 = 0
It is not a quadratic equation.
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