Which of the following quadratic equations has rational, equal and real roots? A. 9- 6x + x² = 0 B. x² + 2x + 2 = 0 C. x² + 4x - 21-0 D. 4x2 + 12x + 10 O A В Which of the following is the discriminant of the quadratic equation: ax² - bx + c = 0, where a, b, c are real number and a + 0? A. b2 B. b - 4ac C. Vb? – 4ac D. -bt vb? – 4ac

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Q: 3. Find the points of intersection of the parabola ²-4x+y=0 and the line-2x+y=-3

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A: Given that:Equation of parabola,y=−(4+x)(2−x) y=x2+2x−8Comparing with standard form of parabola…