Unit 3 test

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the factored form of the expression 8x^3 - 18x?
Back
2x(2x+3)(2x-3)
2.
FLASHCARD QUESTION
Front
How do you find the difference between two matrices A and B (B - A)?
Back
Subtract corresponding elements of A from B.
3.
FLASHCARD QUESTION
Front
What is the result of adding two matrices A and B (A + B)?
Back
Add corresponding elements of A and B.
4.
FLASHCARD QUESTION
Front
Simplify the expression (−2 + 7i)(4 − 2i).
Back
6 + 32i
5.
FLASHCARD QUESTION
Front
What is the simplified form of (8 - 3i)^2?
Back
55 - 48i
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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