6. What is the value of x in the quadratic equation x'-100=0?
A. X=0
B. x= 10
C.x= 1 100
D.+ 1000
7. What is the form of a quadratic equation when b=0?
A. ax +c=0
B. ax'+bx+c=0
C. ax? +b+c=0
D. ax+bx+cx=0
а
8. The roots of a quadratic equation are -4 and 5. Which of the following quadratic equations has these roots?
B.
x2+x-20-0
B. x-x+20=0
C. X +9x+20-0
D.X-9x+20-0
9. What are the solutions of the equation x-x-56=0?
A. X=8, ** -7
B.x-8, x=7
C. x=-8, x-7
D. x=8, x=7
10. What are the factors of the quadratic equation - 6x = -8?
A. (x+4) (x - 2)
B. (x + 4) (x + 2)
C. (x-4) (x-2)
D. (x-4) (x + 2)
11. What is the nature of the roots of the quadratic equation if the value of the discriminant is zero?
A. The roots are not real.
C. The roots are rational and not equal.
8. The roots are irrational and not equal.
D. The roots are rational and equal.
_12.If the quadratic equation is x + 3x -9 = 0, what is the product of its root?
A. 3
B.-3
C.9
D.-9
13. In the equation x'+6x-14-0, what is the sum of its roots?
A. 6
B.-6
C. 14
D.-14
14. What is the nature of the roots of 2x²-x+1-0
A. two real roots
B. two rational and equal roots C. one real root D. no real roots
15. If X, and x, are the roots of the quadratic equation ax'+bx+c=0, then (X + x) is
b
с
- 6
- с
A
B.
C.
D.
a
a​