-- - - 18. Which of the quadratic equations has equal roots? A. (X + 8)(x + 5) = x + 4 B. (x - 4)2 - 9 = 0 C.x² - 8 = 4 D. (x + 1)2+(x - 3)2 = 1 19. What quadratic equation can be solved using factoring? A. (x - 4)2 - 9 = 0 B. (2x + 5) = 8 C. x2 + 3x = -6 D. (x + 1)2+(x - 3)2 = 1 20. The roots of a quadratic equation are -3 and -5. What quadratic equation has these roots? A. (X + 8)2 = -15 B. (X + 8) = -15 C. x2 = x + 15 D. x2 + 8x = 15 21. How many real roots does the equation - (x + 2)(x - 1) = 3 have? A. O B. 1 C.2 D. 3 22. Which of the following statements is true about rational algebraic equations? A. There are rational algebraic equations that cannot be reduced into quadratic equations. B. All values obtained from solving rational algebraic equations are solutions to the said equation, - - . -​