B.
1
P
P+1
z5
D.
+
117- 2
111 + 2
5. How many real roots does the quadratic equation x² + 5x + 7 = 0 have?
A. O
B. 1
C. 2
D. 3
6. What is the sum of the roots of the quadratic equation x² + 6x - 14 = 0?
A. -7
B.-6
C. -3
D. 14
7. Which of the following quadratic equations can be solved easily by extracting
square roots?
A. x+7x+12=0
B. 2w+7w-3=0
C. 47-9=0
D. 3v+2v-8=0
8. The roots of a quadratic equation are -5 and 3. Which of the following
do quadratic equations have these roots?
A. x²-8x+15=0
B. x2+8x+15=0
C. x²-2x-15=0
D. x²+2x-15=0
9. Which of the following mathematical statements is quadratic inequality?
A. 2r2-3r-5=0
B. 7h 12C. 312+ 7t-2≥0
D. s²+8s+15=0
10. Which of the following quadratic equations has no real roots?
A. 2x²+4x= 3
B. 12-81-4=0
C. 3s2 2s -5
D. -2r2+r+7=0
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