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NCERT Class XI Mathematics - Complex Numbers and Quadratic Equations - Solutions

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Question : 6
Total: 52
(
1
5
+i
2
5
)−(4+i
5
2
)
Solution:  
(
1
5
+i
2
5
)−(4+i
5
2
) =
1
5
+i
2
5
 - 4 - i
5
2
 = (
1
5
−4) + i (
2
5
−
5
2
)
= (
1−20
5
)+i(
4−25
10
) =
−19
5
−
21
10
 i = (
−19
5
)+(
−21
10
)i
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