
Multiplying and Rationalizing Expressions
Interactive Video
•
Mathematics
•
8th - 12th Grade
•
Practice Problem
•
Hard
+2
Standards-aligned
Ethan Morris
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean to rationalize the denominator?
To remove fractions from the numerator
To create an equivalent expression without square roots in the denominator
To add square roots to the numerator
To simplify the entire expression
Tags
CCSS.HSN.CN.A.3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the conjugate of a binomial with subtraction?
Multiply by the same binomial
Change addition to subtraction
Divide by the same binomial
Change subtraction to addition
Tags
CCSS.HSN.RN.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do we multiply both the numerator and denominator by the conjugate?
To eliminate the numerator
To form an equivalent expression
To create a different expression
To change the expression
Tags
CCSS.HSA.APR.A.1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of multiplying 7x by 7x?
49x
7x^2
14x
49x^2
Tags
CCSS.7.NS.A.2D
CCSS.8.NS.A.1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the middle terms when multiplying conjugates?
They add up
They remain unchanged
They cancel each other out
They double
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the square root of 5 times the square root of 5 simplify to?
5
1
10
25
Tags
CCSS.HSA.APR.A.1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the simplified form of 49x^2 times 5?
245x
49x^2
245x^2
5x^2
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