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Standard VIII
Mathematics
Question
The expression
a
(
a
+
b
)
is equivalent to
b
a
b
a
b
+
2
a
a
2
+
a
b
A
b
B
a
b
C
a
2
+
a
b
D
a
b
+
2
a
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Solution
Verified by Toppr
The correct option is
A
a
2
+
a
b
Given expression is
a
.
(
a
+
b
)
Solving this, we get
a
.
(
a
+
b
)
=
a
.
a
+
a
.
b
=
a
2
+
a
b
Hence,
a
.
(
a
+
b
)
is equivalent to
a
2
+
a
b
.
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