14 1 1715 1 1 1 1 1 1 16 1 1 1 14. Solve each equation by any method of your choice. (6 points) a. X' +10x+24 =0 b. X +3x-28 =0 c. 6x2 + 11x- 35 =0 d. 5x2 - 180 =0 e. x - 5x +2 =0 f. 3x2+5x-12=0 21. Evaluate the discriminant for each equation, then use it to determine the nature of the roots for each quadratic equations. (3 points) a. X +4x+5 = 0 b. x - 4x-5=0 c. 4x +20x+ 25 = 0 23. Solve each equation. (3 points) a. X +4x+5 =0 b. x - 4x -5=0 c. 4x +20x+ 25 = 0