Test:
Factorisation II - Normal
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Question 1:
Factorise:
3
m
n
2
+
6
m
2
n
A
2
m
n
(
m
+
3
n
)
B
3
m
n
(
n
+
2
m
)
C
9
m
3
n
3
D
3
m
2
n
(
2
m
+
1
)
Question 2:
Factorise:
3
m
3
n
2
−
6
m
2
n
+
9
m
n
A
3
m
n
(
m
2
n
−
2
m
+
3
)
B
6
m
2
n
2
C
3
m
2
n
2
(
m
−
2
n
+
3
)
D
m
2
n
(
3
m
n
−
6
m
+
9
)
Question 3:
Factorise:
a
b
+
b
+
a
+
1
A
(
a
−
1
)
(
b
+
1
)
B
Cannot be factored
C
(
a
+
1
)
(
b
+
1
)
D
b
(
a
+
1
)
+
a
+
1
Question 4:
Factorise:
x
2
−
1
A
(
x
+
1
)
(
x
+
1
)
B
(
x
−
1
)
(
x
−
1
)
C
(
x
−
1
)
(
x
+
1
)
D
x
(
x
−
1
)
Question 5:
Factorise:
m
2
−
n
2
A
(
m
+
n
)
(
m
−
n
)
B
(
m
+
n
)
(
n
−
m
)
C
(
m
+
1
)
(
n
+
1
)
D
(
m
+
1
)
(
n
−
1
)
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