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Question
The value of (3+4i)(6−7i) is
The value of (3+4i)(6−7i) is
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Solution
The correct option is A 46+3i
(3+4i)(6−7i)=3×6+3×(−7)i+4i×6+4i×(−7)i=18−21i+24i+28=46+3i
(3+4i)(6−7i)=3×6+3×(−7)i+4i×6+4i×(−7)i=18−21i+24i+28=46+3i
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