Evaluate the expression
(
−
1
−
2
i
)
+
(
4
−
4
i
)
\displaystyle {\left(-{1}-{2}{i}\right)}+{\left({4}-{4}{i}\right)}
(
−
1
−
2
i
)
+
(
4
−
4
i
)
and write the result in the form
a
+
b
i
\displaystyle {a}+{b}{i}
a
+
b
i
.
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