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Standard VIII
Mathematics
Addition and Subtraction of Algebraic Expression
Question
The sum of
3
expression is
8
+
13
a
+
7
a
2
.
Two of them are
2
a
2
+
3
a
+
2
and
3
a
2
−
4
a
+
1
. Find the third expression.
a
2
+
a
+
5
2
a
2
+
a
+
5
2
a
3
+
14
a
+
5
2
a
2
+
14
a
+
5
A
2
a
2
+
a
+
5
B
a
2
+
a
+
5
C
2
a
3
+
14
a
+
5
D
2
a
2
+
14
a
+
5
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Solution
Verified by Toppr
Expression be x
⇒
x
+
(
2
a
2
+
3
a
+
2
)
+
(
3
a
2
−
4
a
+
1
)
=
8
+
13
a
+
7
a
2
=
x
+
5
a
2
−
a
+
3
=
8
+
13
a
+
7
a
2
⇒
x
=
7
a
2
+
13
a
+
8
−
5
a
2
+
a
−
3
x
=
2
a
2
+
14
a
+
5
.
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Similar Questions
Q1
The sum of
3
expression is
8
+
13
a
+
7
a
2
.
Two of them are
2
a
2
+
3
a
+
2
and
3
a
2
−
4
a
+
1
. Find the third expression.
View Solution
Q2
The perimeter of a triangle is
8
+
13
a
+
7
a
2
and two of its sides are
2
a
2
+
3
a
+
2
and
3
a
2
−
4
a
−
1
. Find the third side of the triangle.
View Solution
Q3
The HCF and the LCM of two algebraic expression are (a -5) and
2
a
3
+
3
a
2
−
44
a
−
105
respectively. If one of the expressions is
2
a
2
−
3
a
−
35
, the other will be
View Solution
Q4
Divide:
(
6
a
5
+
8
a
4
+
8
a
3
+
2
a
2
+
26
a
+
35
)
by
(
2
a
2
+
3
a
+
5
)
Answer:
3
a
3
−
3
a
2
+
a
+
7
View Solution
Q5
Simplify the expression
2
(
a
2
+
a
b
+
3
)
-
a
b
and find its value when
a
=
5
and
b
=
−
3
.
View Solution