

Imaginary Numbers and Quadratics
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a characteristic of rational numbers?
They cannot be represented on the number line.
They are non-terminating, non-recurring decimals.
They can be expressed as a ratio of two integers.
They are always negative.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result when a real number is squared?
It can be either positive or negative.
It is always zero.
It is always positive.
It is always negative.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who first introduced the concept of imaginary numbers?
Isaac Newton
Albert Einstein
Leonhard Euler
Gerolamo Cardano
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What symbol is used to represent the square root of negative one?
j
k
n
i
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the solution to the equation x squared plus 1 equals 0?
x = 0
x = i or x = -i
x = -1
x = 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of i squared?
i
0
-1
1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the discriminant of a quadratic equation indicate?
The number of imaginary roots
The product of the roots
The number of real roots
The sum of the roots
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