Algebra 2 - How to simplify the a radical with imaginary numbers, root(-45)

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Mathematics
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in simplifying a radical expression?
Add the numbers under the radical
Factor the radicand by a square number
Divide the radicand by any number
Multiply the numbers under the radical
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a square number?
8
12
15
9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one method to factor the number 45?
Divide by 2
Add 10
Use a factor tree
Subtract 5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it beneficial to rewrite 45 as 9 * 5 when simplifying radicals?
Because 9 is a prime number
Because 9 is a square number
Because 5 is a prime number
Because 45 is an even number
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the square root of -1 known as?
A rational number
A complex number
A real number
An imaginary number
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