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Question 1 · 2 marks
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Express
(
2
+
3
i
)
(
4
−
i
)
(2 + 3i)(4 - i)
(
2
+
3
i
)
(
4
−
i
)
in the form
a
+
b
i
a + bi
a
+
bi
.
i
xⁿ
a/b
√
π
(
)