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प्रश्न
Which of the following is not a quadratic equation?
विकल्प
2(x – 1)2 = 4x2 – 2x + 1
2x – x2 = x2 + 5
`(sqrt(2)x + sqrt(3))^2 + x^2 = 3x^2 - 5x`
(x2 + 2x)2 = x4 + 3 + 4x3
उत्तर
`bb((sqrt2x + sqrt3)^2 + x^2 = 3x^2 - 5x)`
Explanation:
Considering `(sqrt2x + sqrt3)^2 + x^2` = 3x2 – 5x
`\implies 2x^2 + 3 + 2sqrt(6)x + x^2` = 3x2 – 5x
`\implies 5x + 2sqrt(6) + 3` = 0
Hence, it is not a quadratic equation.
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