MENU
Educational Resources
Exam Papers
Form 1 Videos
Form 2 Videos
Form 3 Videos
Form 4 Videos
Grade 4 Videos
Grade 5 Videos
Grade 6 Videos
Grade 7 Videos
Class 8 Videos
Form 1 Exams
Form 2 Exams
Form 3 Exams
Form 4 Exams
KCSE Videos
Class 8 Exams
Grade 5 Exams
Grade 4 Exams
Grade 3 Exams
Grade 2 Exams
Grade 1 Exams
Online Tests
Online Tuition
Sign In
Join
Get access to thousands of educational resources
Get premium membership
and access revision papers with marking schemes, video lessons and live classes.
OR
Processing. Please wait.
Quadratic Expressions and Equations Video Questions and Answers
Simplify the expression:
4
x
-
9
x
3
3
x
2
-
4
x
-
4
(4m 17s)
1649 Views
SHARE
|
« Previous
Next »
1.
Factorize completely
a
2
+
15
a
b
+
36
b
2
2.
Simplify
(
6
a
+
b
)
(
a
+
b
)
-
7
b
(
a
+
b
)
2
a
2
-
2
b
2
3.
Simplify
a
2
(
a
+
b
)
+
b
2
(
a
-
b
)
4.
If the expression
25
y
2
-
70
y
+
d
is a perfect square, where d is a constant, find the value of d
5.
Factorize
2
x
2
y
2
-
5
x
y
-
12
6.
Factorize completely
28
x
2
+
3
x
-
1
7.
Simplify
2
x
-
2
6
x
2
-
x
-
12
÷
x
-
1
2
x
-
3
8.
Simplify completely
3
x
2
-
1
x
2
-
1
-
2
x
+
1
x
+
1
9.
Factorize completely
3
x
2
-
2
x
y
-
y
2
10.
Find the greatest common factor of
x
3
y
3
and
4
x
y
4
. Hence factorize completely the expression
x
3
y
2
-
4
x
y
4
11.
Factorize
a
2
-
b
2
Hence find the exact value of
2557
2
-
2547
2
12.
Simplify the expression
5
a
-
4
b
=
2
[
a
-
(
2
b
+
c
)
]
13.
Simplify the expression
3
a
2
+
4
a
b
+
b
2
4
a
2
+
3
a
b
-
b
2
14.
Simplify the expression
3
x
2
-
4
x
y
+
y
2
9
x
2
-
y
2
15.
Simplify:
(
x
+
2
y
)
2
-
(
x
-
2
y
)
2
16.
Simplify the expression
4
x
2
+
y
2
2
x
2
-
7
x
y
+
3
y
2
17.
Simplify the expression
(
a
+
1
b
)
2
-
(
a
-
1
b
)
2
18.
Simplify the expression:
2
a
2
-
3
a
b
-
2
b
2
4
a
2
-
b
2
19.
Simplify the expression
9
t
2
-
25
a
2
6
t
2
+
19
a
t
+
15
a
2
20.
Simplify
p
2
+
2
p
q
+
q
2
p
3
-
p
q
2
+
p
2
q
-
q
3
21.
Expand the expression;
(
x
2
-
y
2
)
(
x
2
+
y
2
)
(
x
4
-
y
4
)
22.
Simplify the expression:
15
a
2
b
-
10
a
b
2
3
a
2
-
5
a
b
+
2
b
2
23.
Simplify the expression
a
4
-
b
4
a
3
-
a
b
2
24.
Simply the expression
12
x
2
+
a
x
-
6
a
2
9
x
2
-
4
a
2
25.
Simplify the expression
x
2
+
x
-
4
x
y
-
4
y
(
x
+
1
)
(
4
y
2
-
x
y
)
26.
Simplify the expression:
4
x
-
9
x
3
3
x
2
-
4
x
-
4
27.
Factorize
2
x
2
y
2
-
5
x
y
-
12
28.
Expand and simplify the expression
(
2
x
2
-
3
y
3
)
2
+
12
x
2
y
3
29.
Simplify the expression:
16
m
2
-
9
n
2
4
m
2
-
m
n
-
3
n
2
30.
Expand and simplify
(
x
+
2
y
)
2
-
(
2
y
-
3
)
2
31.
Simplify
p
2
+
2
p
q
+
q
2
p
3
-
p
q
2
+
p
2
q
-
q
3
32.
Expand and simplify
(
2
x
+
1
)
2
+
(
x
-
1
)
(
x
-
3
)
×
Share Content Via:
Facebook
Twitter
WhatsApp
Close
Get premium membership