How to use the difference of two squares to evaluate the limit by substitution

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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
Why is it important to avoid having zero in the denominator?
It simplifies the graphing process.
It results in an undefined expression.
It allows for direct substitution.
It makes the equation easier to solve.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What algebraic method is used to simplify the numerator in this context?
Difference of two squares
Completing the square
Factoring by grouping
Using the quadratic formula
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of factoring the numerator?
To change the variable
To eliminate the denominator
To simplify the expression
To find the roots
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After simplifying the expression, what can be applied to evaluate it?
Graphical analysis
Direct substitution
Matrix operations
Numerical approximation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result when substituting -2 for X after simplification?
-4
0
2
4
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