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Question 1 · 2 marks
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Edexcel 9FM0
Express
(
5
−
2
i
)
(
3
+
4
i
)
(5 - 2i)(3 + 4i)
(
5
−
2
i
)
(
3
+
4
i
)
in the form
a
+
b
i
a + bi
a
+
bi
.
i
xⁿ
a/b
√
π
(
)