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Mathematics
Problem
Express each of the complex number given in the Exercises 1 to 10 in the form
a
+
i
b
a+i b
a
+
ib
. 4.
3
(
7
+
i
7
)
+
i
(
7
+
i
7
)
3(7+i 7)+i(7+i 7)
3
(
7
+
i
7
)
+
i
(
7
+
i
7
)
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