1. Which of the following is a quadratic equation? *
A. 1/x + 6 = 3 B. 2x + 5 = 11 C. x² + 1 = 0 D. x^3+1=0
2. In the equation ax² + bx + c = 0, which of the following cannot be equal to 0 for the equation to be quadratic? *
A. B. a a, b and C. c D. b
3. Which of the following is written in the standard form ? *
A. x² - x = 6 B. x² = 9 C. 3x² + 4x – 5 = 0 D. x² - 5 = x
4. What is the product of the roots of x² - 8x + 7 = 0 ?
A. 8 B. 7 C. - 7 D. - 8
5. What is the sum of the roots of x² - 4x – 5 = 0 ? *
A. 4 B. - 4 C. - 5 D. 5
6. What value of c will make the trinomial x² - 30x + c, a perfect square ? *
A. 225 B. 144 C. 169 D. 196
7. Solve the quadratic equation x² = ( 2x + 1 )² *
A. - 1 B. 1/3, - 1/3 C - 1, - 1/3 D. - 1/2, - 1/3
8. What are the roots of x² - 2x – 1 = 0 ? *
A. 1±2√2 B.1±√8 C.1±√2 D. 1±2√8
9. Find the solution of the quadratic equation x² = 256 *
A. 16 B. - 16 C. ±√16 D. ±16
10. Find the roots of 5x² - 7x = 0 *
A.x = 0, x = 5/7 B. x = 0, x = 7/5 C. x = 0, x = - 7/5 D. x = 0, x = - 5/7
11. Find the roots of 10/x + 1 = 3x *
A. x = 2, x= - 5/3 B. x = 2, x = 5/3 C. x = - 2, x= - 5/3 D. × = - 2, x= 5/3
12. Use the quadratic formula to solve x² - 4x + 2 = 0 *
A. x = 2 ± 2√2 B. x = 4 ± √2 C. x = 2 ± √2 D. x = 1 ± √2
13. In the quadratic equation 5w² + 9w – 10 = 0, which is the quadratic term ? *
A. 9w B.5w² C.w² D. -10
14. Which of the following mathematical statements is a quadratic inequality? *
A. 9h + 18 < 0 B.m² + 9m + 16 = 0 C. 5t - r – 20 = 0 D. 4x² + 2x – 2 > 0
15. One of the roots of 2x² - 3x – 9 = 0 is 3. What is the other root ? *
A. - 3/2 B. 3/2 C. 2/3 D. - 2/3
Share
1. C
2. A (ax² or a)
3. C
4. B
5. A
6. A
7. C
8. C
9. D
10. B
11. B
12. C
13. B
14. D
15. A