Question

sendo a=4-3i, b=-5-6i e c=-4+3i, calcule o valor de a.c+b.c

Answer 1

a = 4 - 3i
b = -5 - 6i
c = -4+3i

$(4 - 3i) *(-4+3i) + (-5-6i)* (-4 +3i) \\ \\ \\ -16 + 12i + 12i + 9 + 20 - 15i + 24i + 18 \\ \\ \\ -7 + 24i + 38 + 9i \\ \\ \\ => 31 + 33i$