Question

Me ajudem por favor
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Answer 1

(-4+3i).(4-3i)+ 5 - 6i

-16

+12i

+12i

-9i²

-9i²+24i-16+5-6i

-9i²+18i-11

Answer 2

a.c + b =

( - 4 + 3i ) . ( 4 - 3i ) + 5 - 6i =

= - 16 + 12i + 12i - 9 i(2) + 5 - 6i

= 12i + 12i - 6i - 16 + 5 - 9i(2)           i(2) = -1

= 24i - 6i - 11 + 9

= 18i - 2