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Question

The value of 2+3i4+5i is

A
8+15i23
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B
2i+2341
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C
3+81i
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Solution

The correct option is B 2i+2341

Standardize the given expression by multiplying and dividing by 45i

2+3i4+5i.45i45i = 810i+12i+15(4)2(5i)2
= 2i+2341


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