Pre-Calculus - Multiplying complex numbers (root(14)+root(10) i) (root(14)-root(10) i)
Interactive Video
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Mathematics
•
11th Grade - University
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial expression that needs to be multiplied in the video?
sqrt 10 - sqrt 14 I times sqrt 10 + sqrt 14 I
sqrt 10 + sqrt 14 I times sqrt 10 - sqrt 14 I
sqrt 14 - sqrt 10 I times sqrt 14 + sqrt 10 I
sqrt 14 + sqrt 10 I times sqrt 14 - sqrt 10 I
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What method is recommended to simplify the multiplication of binomials?
Guessing the result
Memorizing the formula
Drawing a visual diagram
Using a calculator
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of multiplying sqrt 14 by sqrt 14?
sqrt 28
14
sqrt 196
28
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the terms sqrt 140 I and -sqrt 140 I in the calculation?
They multiply to sqrt 19600 I
They remain unchanged
They cancel each other out
They add up to sqrt 280 I
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final result of the multiplication?
24
14
10
0
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