.
a)
z1-z2 =
(1+3i) -(4-4i)
1+3i -4+4i
-3+7i
b)
z2xz1 =
(1+3i)x(4-4i)
4-4i+12i -12(i²)
4+8i -12(-1)
4+8i +12
20+8i
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Answers & Comments
.
a)
z1-z2 =
(1+3i) -(4-4i)
1+3i -4+4i
-3+7i
b)
z2xz1 =
(1+3i)x(4-4i)
4-4i+12i -12(i²)
4+8i -12(-1)
4+8i +12
20+8i