Test:
Algebraic expressions II - Normal
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Question 1:
Factorise:
x
2
-
6
x
+
9
=
...
A
(
x
-
3
)
2
B
(
x
-
2
)
2
C
(
x
-
3
)
3
D
(
x
-
3
)
(
x
+
3
)
Question 2:
Expand:
x
(
x
-
1
)
=
...
A
x
2
+
x
B
x
-
1
C
x
2
-
x
D
x
2
-
1
Question 3:
Expand:
(
x
-
3
)
3
=
...
A
x
3
-
9
x
2
+
27
x
+
27
B
x
3
-
9
x
2
-
27
x
-
27
C
x
3
-
9
x
2
+
27
x
-
81
D
x
3
-
9
x
2
+
27
x
-
27
Question 4:
Simplify:
20
x
2
4
x
3
=
...
A
5
x
B
5
x
x
2
C
5
x
D
5
x
2
Question 5:
Simplify:
(
10
x
5
2
x
2
)
4
=
...
A
625
x
12
B
625
x
12
C
225
x
12
D
625
x
7
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