Q1. Which of the following is a quadratic equation ? 1 point a)x² + 2x + 1 = (4 - x)² + 3 b)-2x² = (5 - x)(2x - 2/5) c)(k+1)x² + 3/2 x = 7 where k = -1 d)x³ - x² ⁼ (x - 1)³
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