3. Which of the following is quadratic? a) (ze + 1)²= 2 (x – 3) b) x (x + 3) = re? c) (x - 1) (x + 1) = x² + 2 d) - 1 = x(2x + 1)
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3. Which of the following is quadratic? a) (ze + 1)²= 2 (x – 3) b) x (x + 3) = re? c) (x - 1) (x + 1) = x² + 2 d) - 1 = x(2x + 1)
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2 (x – 3) b) x (x + 3) = re? c) (x - 1) (x + 1) = x² + 2 d) - 1 = x(2x + 1)
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