A. 4+3i*(-4-3i)=-16-9i
B. -4-3i* 5+6i=-20-18i
C. 4+3i/-4-3i= -1-1i
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A. 4+3i*(-4-3i)=-16-9i
B. -4-3i* 5+6i=-20-18i
C. 4+3i/-4-3i= -1-1i