Writing the polynomial function with a complex number as a zero

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Mathematics, Information Technology (IT), Architecture
•
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 conjugate of the complex number 2 + i?
-2 + i
2 - i
2 + i
-2 - i
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When setting zeros equal to X, which operation is NOT typically used?
Addition
Division
Subtraction
Multiplication
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What mathematical method is used to simplify the multiplication of binomials in this section?
Difference of two squares
Quadratic formula
Completing the square
Synthetic division
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the box method, what do you calculate to find the area of each box?
Base times height
Radius times diameter
Length times width
Circumference times radius
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final polynomial expression derived in the video?
F(x) = x^3 - 8x^2 + 21x - 20
F(x) = x^3 - 8x^2 + 21x - 19
F(x) = x^3 - 8x^2 + 20x - 20
F(x) = x^3 - 7x^2 + 21x - 20
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