Chapter 1 Quadratic Equations In One Unknown Worksheet With Answers Page 31
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341
Quadratic Equations in One Unknown
Name :
1G
Date :
Mark :
Multiple Choice Questions
1.
What is the value of a if the quadratic
6.
Solve the quadratic equation
=
−
−
−
=
2
2
equation 7
x
8
3
x
is written in the
.
x
x
42
0
+
+
= ?
2
general form ax
bx
c
0
x = 6 or 7
A.
A. −3
x = −6 or −7
B.
3
B.
x = −6 or 7
C.
7
D. 8
B
C.
x = 6 or −7
D.
C
2.
What is the discriminant of the quadratic
+
+
=
2
equation x
12
x
10
0
?
7.
Solve the quadratic equation
+
+
=
2
x
9
x
8
0
.
A. 104
B.
184
x = 1 or 8
C.
134
D. 12
A
A.
x = −1 or −8
B.
3.
How many roots does the quadratic
x = −1 or 8
+
−
=
2
C.
equation x
6
x
36
0
have?
x = 1 or −8
D.
B
A. 1
B.
0
C.
2
D. 3
C
8.
Which of the following expressions is a
perfect square?
4.
Which of the following is the general
+ +
2
A.
9
x
1
9
x
form of the quadratic equation
+
=
+ ?
+
+
2
2
2
(
x
x
)
15
x
3
B.
25
5
x
x
−
+
+
=
+
2
C.
36
x
12
x
1
2
A.
2
(
x
x
)
3 5
(
x
1
)
+
−
2
−
−
=
D.
4
4
x
x
2
C
B.
2
x
13
x
3
0
−
+
=
2
C.
2
x
13
x
3
0
, then x =
+
=
−
2
2
9.
If (
x
2
)
9
(
x
5
)
+
+
=
2
D.
2
x
3
13
x
0
B
A. −2 or 5.
5.
Which of the following quadratic equation
13
17
B.
or
.
have roots −5 and 3?
4
2
+
−
=
43
47
2
A.
x
8
x
15
0
C.
or
.
10
8
−
−
=
2
B.
x
2
x
15
0
D. 13
B
−
+
=
2
C.
x
2
x
15
0
+
−
=
2
D.
x
2
x
15
0
D
31
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