Complex Numbers

Flashcard
•
Mathematics
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the square root of -81?
Back
9i
2.
FLASHCARD QUESTION
Front
What is the square root of -36?
Back
6i
3.
FLASHCARD QUESTION
Front
What letter usually represents the imaginary number?
Back
i
4.
FLASHCARD QUESTION
Front
What is (5-3i) + (-6+2i)?
Back
-1-i
5.
FLASHCARD QUESTION
Front
What is (10+3i) * (2-9i)?
Back
47-84i
6.
FLASHCARD QUESTION
Front
Define a complex number.
Back
A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.
7.
FLASHCARD QUESTION
Front
What is the imaginary unit 'i'?
Back
The imaginary unit 'i' is defined as the square root of -1.
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