
Understanding Quadratic Functions with Complex Zeros

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard
+1
Standards-aligned

Lucas Foster
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the conjugate of the complex zero 2 - 3i?
2 + 3i
2 - 3i
-2 + 3i
-2 - 3i
Tags
CCSS.HSN.CN.C.9
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do complex zeros come in pairs?
Because they are conjugates of each other
Because they are always positive
Because they are imaginary
Because they are always negative
Tags
CCSS.HSA-REI.B.4B
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in using the method of completing the square in reverse?
Add 2 to both sides
Subtract 2 from both sides
Divide both sides by 2
Multiply both sides by 2
Tags
CCSS.HSA-REI.B.4B
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What operation is performed after subtracting 2 from both sides?
Multiplying by i
Taking the square root
Dividing by i
Squaring both sides
Tags
CCSS.HSN.CN.C.8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of squaring 3i?
9
-9i
-9
9i
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the quadratic equation formed after simplifying?
x^2 + 4x + 13 = 0
x^2 - 4x - 13 = 0
x^2 + 4x - 13 = 0
x^2 - 4x + 13 = 0
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is added to both sides to finalize the quadratic equation?
4
-9
-4
9
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