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Byju's Answer
Standard VII
Mathematics
Addition and Subtraction of Algebraic Expressions
Simplify the ...
Question
Simplify the following expressions.
a
2
−
b
2
a
−
b
−
a
3
−
b
3
a
2
−
b
2
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Solution
The given expressions can be written as
a
2
−
b
2
a
−
b
−
a
3
−
b
3
a
2
−
b
2
=
(
a
2
−
b
2
)
(
a
+
b
)
−
(
a
3
−
b
3
)
(
1
)
a
2
−
b
2
=
(
a
+
b
)
2
(
a
−
b
)
−
(
a
−
b
)
(
a
2
+
b
2
+
a
b
)
(
a
−
b
)
(
a
+
b
)
=
a
2
+
b
2
+
2
a
b
−
a
2
−
b
2
−
a
b
a
+
b
=
a
b
a
+
b
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Q.
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Simplify
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is equal to
Q.
Simplify
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Q.
Simplify the following expression:
(
a
+
3
b
(
a
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:
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