Which among the following are quadratic equations?
(i) (x-2)² = (x +4)²
(ii) 2x +3 = x²
(iii) 3x³-4x² + 1 = 0
(iv) √2x² - 4x +7=0
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Step-by-step explanation:
(iii) 3x³-4x² + 1 = 0 quadratic equation.
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