16. What is the product of the roots of the quadratic equation 3x2 + 15x - 21 = 0?
A. 15
B. 5
C. -5
D. -7
17. Which of the following quadratic equations can be solved easily by extracting
square roots?
A. x² + 7x + 12 = 0
C.46 - 9 = 0
B. 2W + 7w - 3 = 0
D. 3v2 + 2v - 8 = 0
18. Given the roots: -9 and 2, which is the quadratic equation in the form of ax + bx + c
= 0?
A. X- 7x - 18 = 0
C. x² - 7x - 18 = 0
B. XP-7x + 18 = 0
D. x2 + 7x + 18 = 0
For numbers 19 and 20:
19. The length of a garden is 5 m longer than its width and the area is 36 m². How long
is the garden?
A. 4 m
B. 5 m
C. 9 m
D. 13 m
20. How wide is the garden?
A. 4 m
B. 5 m
C.9 m
D. 13 m​