Complex Numbers Flipbook
Presentation
•
Mathematics
•
10th Grade
•
Hard
Joseph Anderson
FREE Resource
10 Slides • 9 Questions
1
Objective: Students will review the definition of complex numbers and learn how to perform operations on complex numbers.
2
Real Numbers: a number that can be found on a number line.
3
4
5
Multiple Choice
How do you write the following number using the imaginary unit i? −12
i 12
2i 3
−12
7
6
Multiple Choice
How do you write the following number by using the imaginary unit i? −25
i
5
-5
5i
7
Multiple Choice
How do you write the following number by using the imaginary unit i? −7
i
-7
i 7
no answer
8
Complex Numbers: a combination of real and imaginary numbers (Cannot be found on a number line).
9
When adding complex numbers, combine like terms
1. Add real parts together (any numbers without an i attached to it)
2. Add imaginary parts together (any numbers with an i attached to it)
10
Find the sum of the following:
(5 + 2i) + (4 - 8i)
Identify like-terms (real numbers together & imaginary numbers together)
Combine like-terms
Solution
11
Multiple Choice
Find the Sum
3i + 2i
5i
5i2
6i
-5
12
Multiple Choice
Find the sum. combine the like terms
(5-2i) + (-7+8i)
-2+6i
12+6i
-35-16i2
-35 -16i
13
(3 + 2i) - (8 - 4i)
Distribute the negative
3 + 2i - 8 + 4i
Identify like-terms
3 + 2i - 8 + 4i
-5 + 6i
Solution
14
Fill in the Blanks
−3+6i−(−5−3i)−8i
Type answer...
15
Multiple Choice
Simplify:
(10+ 15i) - (48 - 30i)
58 - 45i
58 - 15i
-38 - 15i
-38 + 45i
16
Multiply 3 and 4, and the i's
Replace i2 with -1
Simplify
Multiply 5 and -6, and the i's
Replace i2 with -1
Simplify
17
Distribute 3i
Replace i2 with -1
Simplify
18
Fill in the Blanks
What is the product? (3i)(−5+2i)
Type answer...
19
Multiple Choice
Find the product: (−2i)(−6+i)
2+12i
12i
no answer
Objective: Students will review the definition of complex numbers and learn how to perform operations on complex numbers.
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