Test:
Factors I - Challenging
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Question 1:
Factorise:
7
x
3
-
8
x
2
+
5
x
=
...
A
x
(
7
x
2
-
8
x
+
5
)
B
x
(
x
2
-
8
x
+
5
)
C
x
7
(
x
-
5
7
)
(
x
-
3
5
)
D
x
(
7
x
2
-
x
+
5
)
Question 2:
Factorise:
x
3
-
8
x
2
+
19
x
-
12
=
...
A
(
x
-
1
)
(
x
-
3
)
(
x
-
4
)
B
(
x
-
1
)
(
x
2
-
x
+
12
)
C
(
x
-
1
)
(
x
-
2
)
(
x
-
4
)
D
(
x
-
1
)
(
x
2
-
7
x
+
12
)
Question 3:
Factorise:
(
x
2
+
x
+
3
)
(
x
2
+
x
+
4
)
-
12
A
x
(
x
+
1
)
(
x
2
+
x
+
6
)
B
x
(
x
+
1
)
(
x
+
7
)
(
x
-
1
)
C
(
x
2
+
x
)
(
x
2
+
x
+
7
)
D
x
(
x
+
1
)
(
x
2
+
x
+
7
)
Question 4:
Factorise:
(
2
x
-
1
)
4
-
(
x
+
1
)
4
=
...
A
(
(
2
x
-
1
)
2
-
(
x
+
1
)
2
)
×
(
(
2
x
-
1
)
2
+
(
x
+
1
)
2
)
B
(
(
2
x
-
1
)
2
-
(
x
+
1
)
2
)
×
(
(
2
x
-
1
)
2
+
(
x
+
1
)
2
)
C
(
3
x
2
-
6
x
)
(
5
x
2
-
2
x
+
2
)
D
3
x
(
x
-
2
)
(
5
x
2
-
2
x
+
2
)
Question 5:
Factorise:
x
3
-
7
x
2
+
15
x
-
9
=
...
.
A
(
x
-
1
)
(
x
2
-
6
x
+
9
)
B
(
x
-
1
)
(
x
-
3
)
2
C
(
x
-
1
)
(
x
-
2
)
(
x
-
3
)
D
(
x
-
1
)
2
(
x
-
3
)
Question 6:
Factorise:
16
x
4
-
8
x
2
+
1
=
...
A
(
4
x
2
-
1
)
2
B
(
x
-
1
)
2
(
2
x
+
1
)
2
C
(
x
-
1
)
2
(
x
+
1
)
2
D
(
2
x
-
1
)
2
(
2
x
+
1
)
2
Question 7:
Factorise:
3
x
2
y
+
2
y
2
+
3
x
3
+
2
x
y
=
...
A
(
x
+
y
)
(
3
x
+
2
y
)
B
(
x
+
y
)
(
3
x
2
+
2
y
)
C
(
x
+
y
)
(
3
x
2
+
y
)
D
3
x
2
(
y
+
x
)
+
2
y
(
y
+
x
)
Question 8:
Factorise:
2
x
2
-
7
x
-
3
=
...
A
(
x
-
3
)
(
x
-
1
)
)
B
2
(
x
-
1
)
(
x
-
1
2
)
C
2
(
x
-
3
)
(
x
-
1
2
)
D
(
x
-
3
)
(
x
-
1
2
)
Question 9:
Reduce:
9
x
2
-
6
x
+
1
3
x
-
1
=
...
A
1
3
x
-
1
B
1
C
x
D
3
x
-
1
Question 10:
Reduce:
x
3
-
2
x
2
+
2
x
x
-
2
=
...
A
x
(
x
2
-
2
x
+
2
)
x
-
1
B
1
C
2
x
(
x
-
1
)
D
1
x
-
2
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