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Byju's Answer
Standard VII
Mathematics
(a + b)^2 Expansion and Visualisation
Evaluatei ...
Question
Evaluate
(i)
(
a
2
b
+
2
b
a
)
2
−
(
a
2
b
+
2
b
a
)
2
−
4
(ii)
(
4
a
+
3
b
)
2
−
(
4
a
−
3
b
)
2
+
48
a
b
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Solution
(
i
)
[
a
2
b
+
2
b
a
]
2
−
[
a
2
b
+
2
b
a
]
2
−
4
=
−
4
(
i
i
)
(
4
a
+
3
b
)
2
−
(
4
a
−
3
b
)
2
+
48
a
b
=
(
16
a
2
+
9
b
2
+
24
a
b
)
−
(
16
a
2
+
9
b
2
−
24
a
b
)
+
48
a
b
=
48
a
b
+
48
a
b
=
96
a
b
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1
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