8. The roots of a quadratic equation are -5 and 3. Which of the following
quadratic equations has these roots?
A.x'-8x +15 - 0
C.x-2x -15 0
B. x + 8x +15 0
D. x + 2x -15-0
9. Which of the following mathematical statements is a quadratic
inequality?
A. 2r-3-5-0
C. 31° +7-20
B.7h + 12 <0
D. s? +8s + 15-0
10. Which of the following values of x make the equation x2 + 7x-18
- true?
L. -9 II.2 III. 9
A. I and II B. II and III C. I and III D. I, II, and III
11. Which of the following quadratic equations has no real roots?
A. 2x2 + 4x-3
C.3s-2s --5
B. t-8-40
D.-2r+r+7-0
12. What is/are the factor(s) of the equation y-64?
A.(+8) B. [8] C. (+8) (-8) D. (-8,8)
13. The smaller solution of the equation (x-6*x+5)-o is
A6
B. -5
C. 4
14. The solution to the equation - or=0 is
A.O, only B. O and 6 C. 6, only
D. 6
15. What is the solution set of ****
A. {-2,3} B. (-1,6] C. (-3,-2) D. {-6, 1)
16. What is the nature of the roots of the quadratic equation if the value
of its discriminant is zero?
A. The roots are not real.
B. The roots are irrational and not equal.
C. The roots are rational and not equal.
D. The roots are rational and equal.
D. -3​