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Which of the following is not a quadratic equation

Quadratic Equations (10)

Which of the following is not a quadratic equation?

  1. $ 2(x −1)^2 = 4x^2 − 2x + 1 $
  2. $ 2x − x^2 = x^2 + 5 $ 
  3. $ (\sqrt{2}x + \sqrt{3})^2 + x^2 = 3x^2 -5x $
  4. $ (x^2 + 2x)^2 = x^4 + 3 + 4x^3 $

Answer

C. $ (\sqrt{2}x + \sqrt{3})^2 + x^2 = 3x^2 -5x $

Exam Year: 2023
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