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Byju's Answer
Standard IX
Mathematics
Expansion of (a ± b)²
Evaluate each...
Question
Evaluate each of the following using suitable identities.
(
103
)
3
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Solution
We know that
(
x
+
y
)
3
=
x
3
+
y
3
+
3
x
y
(
x
+
y
)
(
103
)
3
=
(
100
+
3
)
3
Here
x
=
100
and
y
=
3
(
100
)
3
+
(
3
)
3
+
3
(
100
)
(
3
)
(
100
+
3
)
=
1000000
+
27
+
900
(
100
+
3
)
=
1000000
+
27
+
90000
+
2700
=
1092727
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