How to write the domain of a rational function with a radical in the numerator

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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 restriction mentioned in the video regarding the expression under the radical?
X must be less than 0
X must be less than or equal to 0
X must be greater than or equal to 0
X must be equal to 0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't the square root of a negative number be taken in the real number system?
Because it results in an undefined number
Because it results in zero
Because it results in a positive number
Because it results in a complex number
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What conclusion is drawn about the quadratic expression X^2 + 1 in terms of restrictions?
It has no restriction in the real number system
It has a restriction at X = 0
It has a restriction at X = -1
It has a restriction at X = 1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the only restriction that needs to be considered for the expression?
X is not equal to 1
X is less than 1
X is equal to 1
X is greater than or equal to 1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the restriction X ≥ 1 represented on a number line?
A closed circle at 1 with a line extending to the left
An open circle at 1 with a line extending to the right
A closed circle at 1 with a line extending to the right
An open circle at 1 with a line extending to the left
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