_______ 11. Solve the roots of a quadratic equation x
2
- 4x = -3 using quadratic formula.
A. x1= 3; x2= -1 B. x1= 3; x2= 1 C. x1= -3; x2= -1 D. x1= -3; x2= 1
_______ 12. Which of the following is the nature of the roots of the quadratic equation x2
+ 6x +9 =0?
A. Real and are equal C. no real roots
B. Rational but are not equal D. irrational and are not equal
_______ 13. What is the sum of the roots of the quadratic equation x2 + 3x – 18 = 0?
A. -7 B. - 5 C. - 3 D. 14
_______ 14. If the square of a number is added to 3 times the number, the sum is 108. Find the number.
A. -12 0r 9 B. – 9 or -12 C. 12 or 9 D. -9 or 12
_______ 15. One of the roots of 2x2
– 13x + 20 = 0 is 4. Which of the following is the other root?
A.
B.
C.
D.
_______ 16. Solve: x
A. -2 or -9 B. 2 or -9 C. -2 or -9 D. 2 or 9
_______ 17. Susan’s father is 3 years more than twice as old as Susan. The product of their ages in
years is 560. How old is Susan?
A. 16 years old B. 17 years old C. 18 years old D. 19 years old
_______ 18. If you are assigned to find the solutions of the quadratic equation x2
+2x = 1 and describe
the relationship between the coefficients and the roots of a quadratic equation. Which of
the following is your answer?
A. has no real roots
B. x1= 1+√ ; x1= 1- √ ; Roots are both not real
C. x1= -1+√ ; x1= -1- √ ; rational and are not equal
D. x1= -1+√ ; x1= -1- √ ; irrational and are not equal
_______ 19. You are tasked by your SSG president to find out how many seats must be placed in each
row of the BCSAT Covered Court if there are 1200 seats available. The number of seats
in each row is 10 less than the number of rows. Which of the following is your arrangement?
A. 20 seats in a row C. 40 seats in a row
B. 30 seats in a row D. 40 seats in a row
_______ 20. Your group leader asked you to identify the given quadratic sentences that are written in
any of these forms ax2 +bx + c 0, ax2 +bx + c ≥ 0 and ax2 +bx + c ≤ 0. How
do you identify them?
A. Linear Equation C. Quadratic Equation
B. Linear Inequality D. Quadratic Inequalities
Share
Answer:
11.A
12.C
13.B
14.A
15. D
16.C
17.C
18.A
19.B
20.D