Alg 2 Practice 5-6 2015.pdf

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Date Complex Numbers

Practice 5-6 Simplify each expression. 1. (1+5i) + (1 - 5i)

2.

(3 + 2i) - (3 + 2i)

3.

(2 + 6i) - (7 + 9i)

4.

(1 + 5i)(1 - 5i)

5.

(1 + 5i)(6 - 3i)

6.

(5 - 6i)(6 - 2i)

7.

(3 + 4i)(3 + 4i)

8.

(2 + 3i)(2 - 3i)

9.

(2 + 2i)(2 - 2i)

10.

(1 + 3i)(1 - 7i)

11.

(2 + 4i)(-3 - 2i)

12.

(11 - 12i)(11 + 12i)

13.

(2 + 3i) + (-4 + 5i)

14.

(5 + 14i) - (10 - 2i)

15.

(5 + 12i)(5 - 12i)

16.

(3 + 4i)(1 - 2i)

17.

(6 + 2i)(1 - 2i)

18.

(5 - 13i)(5 - 13i)

19.

(-2 + 3i) + (4 +5i)

20.

(5 +

21.

(-1 - 5i)(-1 + 5i)

22.

(2 + 3i)(4 + 5i)

23.

(-1 + 4i)(1 - 2i)

24.

(4 - i )(4 - i)

4i) - (-1 - 2i)

25.

26.

27.

28.

29.

30.

31.

32.

33.

32.

33.

36.

Solve each equation. 37. 3x2 + 75 = 0

38. 5x2 + 500 = 0

39. 4x2 + 1=0

40. x2 + 9 = 0