C. D. 523-24 B. 6 6 1 22. The sum of the roots of ax? + bx + c = 0 is A. b/a B. -b/a C. cla D. -cla 23 In solving 3x2 - 5x - 2 = 0, what which of the following is the correct solution by using the quadratic formula? A. -5 • 25+24 5+25+23 -5+ 25-24 24. Which of the following is not a quadratic equation. A. x² – 4=0 B. x2 +10x = 21 C. x2 + 4x + 4 = 0 D. 7x-12 = 0 25. Find all solutions to the equation x2 = 16. A. & B. 4 and -4 C. 8 and -8 0.22 and -16 26. Choose the correct values of a, b, and c in the equation 5x2 - x +6=0. A.a = 5, b = 1, c= 6 C. a = 6, b = -1, c= 5 B. a = 5, b = -1, c = 6 D. a =-5, b = -1, C =-6 27. Find the value 62 - 4ac of the quadratic formula for 4x2 +5x +1= 0 A. -8 B. O C. 9 D. 41 28. What term do you need to add to the quadratic x? - 12x to create a perfect square trinomial? A. -6 B. 12 C. 36 D.14 29. What is the product of the equation . x² + 8x + 15? A. 8 B.-8 C. 15 D. -15 30. What is the sum of the roots of the equation x? - 8x – 4 = 0? A. 8 B. -8 C.4 D.-4 31. Which of the following mathematical statements is a quadratic inequality? A. 2r2 - 3r-5 = 0 B. 7h + 12 < 0 C. 3t? + 71-220 D S2 + 8s + 15 = 0 32. A quadratic inequality is can be written in the form of the following EXCEPT: A. ax? + bx + C > 0 B. ax2 + bx + c < 0 C. ax? + bx + c = 0 D. ax? + bx+c20 33. Which of the following is a quadratic inequality in two variables? A. y​