Test:
Factors I - Normal
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Question 1:
Factorise:
15
=
...
A
3
×
4
B
3
×
5
C
1
×
3
×
5
D
1
×
3
×
3
Question 2:
Factorise:
40
=
...
A
2
×
2
×
2
×
5
B
1
×
2
×
2
×
2
×
5
C
2
×
2
×
5
D
1
×
2
×
5
Question 3:
Factorise:
9
x
2
-
16
=
...
A
(
3
x
-
1
)
(
3
x
+
1
)
B
(
x
-
4
)
(
x
+
4
)
C
(
3
x
-
1
)
(
3
x
+
4
)
D
(
3
x
-
4
)
(
3
x
+
4
)
Question 4:
Factorise:
6
x
2
+
2
x
3
=
...
A
2
x
(
3
x
+
x
2
)
B
x
2
(
6
+
2
x
)
C
2
x
2
(
3
+
x
)
D
x
2
(
3
+
x
)
Question 5:
Factorise:
x
2
-
5
x
=
...
A
(
x
-
1
)
(
x
-
5
)
B
x
(
x
-
5
)
C
(
x
-
5
)
2
D
x
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