Unit 5 & 6 Quadratics & Complex Numbers
Flashcard
•
Mathematics
•
11th - 12th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the modulus of a complex number?
Back
The modulus of a complex number z = a + bi is given by |z| = √(a² + b²).
2.
FLASHCARD QUESTION
Front
Find the modulus of the complex number z = 6 + 4i.
Back
|z| = 2√13.
3.
FLASHCARD QUESTION
Front
What is the vertex of a parabola given the focus and directrix?
Back
The vertex is the midpoint between the focus and the directrix.
4.
FLASHCARD QUESTION
Front
If the focus of a parabola is at (5, 5) and the directrix is y = 1, what is the vertex?
Back
(5, 3).
5.
FLASHCARD QUESTION
Front
How do you simplify a complex number?
Back
Combine the real parts and the imaginary parts separately.
6.
FLASHCARD QUESTION
Front
Simplify: (10 + 15i) - (48 - 30i).
Back
-38 + 45i.
7.
FLASHCARD QUESTION
Front
What is a perfect square trinomial?
Back
A trinomial that can be expressed as the square of a binomial.
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