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Question

The conjugate of the complex number 2+5i43i is

A
726i25
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B
726i25
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C
7+26i25
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D
7+26i25
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Solution

The correct option is D 726i25
Conjugate of 2+5i43i is
Multiply & divide 4+3i
(2+5i)(4+3i)(4+3i)(43i)=8+6i+20i116+9
26i716+9
Conjugate is 726i25
Conjugate of a+ib=aib.

1034743_1070798_ans_f8ee0bfbb2904e5f8784b9e782f3e6f1.jfif

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Properties of Conjugate of a Complex Number
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