Test:
Algebraic expressions II - Normal
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Question 1:
Factorise:
x
2
-
6
x
+
9
=
...
A
(
x
-
3
)
(
x
+
3
)
B
(
x
-
3
)
2
C
(
x
-
3
)
3
D
(
x
-
2
)
2
Question 2:
Expand:
x
(
x
-
1
)
=
...
A
x
-
1
B
x
2
-
x
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
-
81
C
x
3
-
9
x
2
+
27
x
+
27
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
2
D
5
x
Question 5:
Simplify:
(
10
x
5
2
x
2
)
4
=
...
A
625
x
12
B
225
x
12
C
625
x
12
D
625
x
7
Question 6:
Simplify:
(
x
3
)
2
3
=
...
A
x
2
B
1
C
x
1
3
D
x
Question 7:
Simplify:
(
x
-
8
)
(
x
-
8
)
-
1
2
=
...
A
(
x
-
8
)
1
2
B
1
C
(
x
-
8
)
-
1
2
D
(
x
-
8
)
2
Question 8:
Factorise:
x
3
-
1
x
-
1
=
...
A
x
2
+
x
-
1
B
x
2
+
x
+
1
C
x
2
-
x
+
1
D
x
2
-
1
Question 9:
Simplify:
5
x
7
y
÷
20
x
y
5
=
...
A
5
x
6
20
y
4
B
x
3
4
y
4
C
x
6
4
y
3
D
x
6
4
y
4
Question 10:
Simplify:
x
2
-
4
x
+
4
x
2
-
x
-
2
=
...
A
x
-
2
x
+
1
B
x
+
2
C
1
x
+
1
D
(
x
-
2
)
2
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