Subtracting two rational expressions and simplifying the answer

Interactive Video
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Mathematics
•
11th Grade - University
•
Hard
Wayground Content
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in identifying the Least Common Denominator (LCD) in a set of expressions?
Finding the largest number that divides all terms
Identifying the smallest number that all terms can divide into
Adding all the terms together
Subtracting the smallest term from the largest
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When simplifying fractions using the LCD, what must be done to each term in the expression?
Divide each term by the LCD
Add the LCD to each term
Subtract the LCD from each term
Multiply each term by the LCD
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't you divide across subtraction when simplifying expressions?
Because you must divide each term separately
Because subtraction is not a valid operation in simplification
Because subtraction is equivalent to addition
Because subtraction changes the sign of the terms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key constraint to remember when simplifying expressions involving variables?
Variables can be any number
Variables must be positive
Variables cannot equal certain values
Variables must be integers
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of the video, what is the significance of the expression 'X cannot equal 0 and X cannot equal 5'?
It indicates the values that make the denominator zero
It represents the range of possible values for X
It shows the values that make the numerator zero
It is a rule for multiplying expressions
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