Why is it necessary to multiply by the conjugate instead of just the square root?
Practicing rationalizing the denominator with binomial denominator

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Mathematics, Science
•
11th Grade - University
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To simplify the expression to a single term
To avoid complex numbers
To ensure the result is a real number
To perform a difference of two squares
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of multiplying two binomials by their conjugates?
A sum of two squares
A product of two squares
A difference of two squares
A quotient of two squares
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the middle terms when multiplying binomials by their conjugates?
They remain unchanged
They become complex
They cancel out
They double
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the simplified form of the denominator in the expression given in the video?
1 - sqrt 9
1 - 3
-2
5 halves
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which property is applied in the numerator during the simplification process?
Commutative Property
Associative Property
Distributive Property
Identity Property
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