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Byju's Answer
Standard IX
Mathematics
Algebraic Identities
The expressio...
Question
The expression
3
−
4
i
5
+
3
i
is equivalent to
A
27
−
29
i
34
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B
27
−
29
i
16
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C
3
−
29
i
34
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D
1
8
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E
15
−
8
i
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Solution
The correct option is
C
3
−
29
i
34
Given,
3
−
4
i
5
+
3
i
Multiply and divide it with
5
−
3
i
, we get
3
−
4
i
5
+
3
i
×
5
−
3
i
5
−
3
i
=
(
3
−
4
i
)
(
5
−
3
i
)
5
2
−
(
3
i
)
2
=
3
−
29
i
34
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