Imaginary And Complex Numbers Practice Page 4
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4Imaginary and Complex Numbers Practice
Simplify:
1) (4 + 2i) + (-3 – 5i)
2) (-3 + 4i) – (5 + 2i)
3) (-8 – 7i) – (5 – 4i)
4) (3 – 2i)(5 + 4i)
2
5) (3 – 4i)
2
6) (3 – 2i)(5 + 4i) – (3 – 4i)
3
7
i
+
7) Write
in standard form
5
3
i
−
925
8) Simplify i
460
9) Simplify i
1
4
i
−
10) Write
in standard form
5
2
i
+
16
11)
−
8
12)
−
6
6
13)
−
−
25
14) 4 +
−
6
8
−
−
15)
2
−
Answers:
(1) 1 – 3i
(2) -8 + 2i
(3) -13 – 3i
(4) 23 + 2i
3 22
−
(5) -7 – 24i
(6) 30 + 26i
(7)
i
(8) i
+
17
17
2
22
−
2
(9) 1
(10)
i
(11) 4i
(12) 2
i
−
29
29
2
(13) -6
(14) 4 +5i
(15) -3 +
i
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