Imaginary Number Intro

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•
Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an imaginary number?
Back
An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit 'i', where i is defined as the square root of -1.
2.
FLASHCARD QUESTION
Front
What is the value of i^2?
Back
i^2 = -1.
3.
FLASHCARD QUESTION
Front
Simplify: √(-100)
Back
± 10i.
4.
FLASHCARD QUESTION
Front
What is the standard form of a complex number?
Back
The standard form of a complex number is a + bi, where a is the real part and b is the imaginary part.
5.
FLASHCARD QUESTION
Front
What is the result of adding two imaginary numbers, 3i and 4i?
Back
7i.
6.
FLASHCARD QUESTION
Front
What is the result of multiplying two imaginary numbers, i and i?
Back
i * i = i^2 = -1.
7.
FLASHCARD QUESTION
Front
Simplify: 7x^2 - 5x + 3 - 2x^2 - 2x - 1
Back
5x^2 - 7x + 2.
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