

Simplifying Square Roots and Imaginary Numbers
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Thomas White
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the imaginary unit 'i' equivalent to?
The square root of 1
The square root of -1
The square root of 0
The square root of 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it helpful to have a list of perfect square roots when simplifying square roots by hand?
It is not helpful at all
It helps in identifying the largest perfect square factor quickly
It is only useful for positive numbers
It makes the process slower
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in simplifying the square root of -250?
Divide 250 by 2
Multiply 250 by 2
Add 250 to itself
Remove the negative sign by using 'i'
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which perfect square is used to simplify the square root of 250?
4
16
25
9
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the simplified form of the square root of -250?
10i√5
25i√10
i√250
5i√10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When adding or subtracting radicals, what must be true about the radicals?
They must be like radicals
They must be different
They must be positive
They must be negative
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the square root of -18 simplified in the example?
By dividing by 2
By using the square root of 9
By adding 18
By multiplying by 3
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