Test:
Algebraic expressions II - Challenging
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Question 1:
Multiply
4
1
3
a
×
2
b
2
A
4
1
6
a
b
2
B
8
1
3
a
b
2
C
8
2
3
a
b
2
D
4
2
3
a
b
2
Question 2:
Calculate
3.85
×
5
1
7
−
69.25
:
27.7
A
173
B
17.3
C
0.173
D
1.73
Question 3:
Multiply fractions
3
x
2
−
y
2
×
x
+
y
2
3
A
x
+
y
x
B
x
−
y
x
+
y
C
x
−
y
x
D
x
+
y
x
−
y
Question 4:
Divide:
x
−
y
:
x
−
y
A
x
−
y
B
x
−
y
C
x
+
y
D
x
+
y
Question 5:
Simplify:
a
7
a
2
−
3
a
6
A
a
−
5
B
a
5
C
a
4
D
a
Question 6:
Factorise the expression:
a
2
+
b
2
−
25
+
2
a
b
A
a
+
b
a
−
5
B
5
a
−
b
C
a
+
b
+
5
a
+
b
−
5
D
a
+
b
+
5
a
+
b
+
5
Question 7:
Simplify:
4
x
−
5
y
2
−
4
x
4
x
−
10
y
A
−
25
x
2
B
25
y
2
C
25
x
2
D
−
25
y
2
Question 8:
Solve
a
−
6
−
b
12
, if
a
=
11
+
b
A
−
7
12
B
−
5
12
C
5
12
D
7
12
Question 9:
How will the volume of the cube change if each edge is increased by
20
%
?
A
Volume increases
1.2
times
B
Volume decreases by
1.728
times
C
Volume decreases by
1.2
times
D
Volume increases
1.728
times
Question 10:
Simplify the expression
9
−
24
x
+
16
x
2
, if
x
>
3
4
A
4
x
+
3
B
3
+
4
x
C
4
x
−
3
D
3
−
4
x
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