What is a radical in mathematics?
Operations with Radicals

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•
Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A radical is a symbol used to represent the root of a number, most commonly the square root. For example, √4 represents the square root of 4.
2.
FLASHCARD QUESTION
Front
How do you simplify √(a * b)?
Back
√(a * b) = √a * √b, provided that a and b are non-negative.
3.
FLASHCARD QUESTION
Front
What is the value of √(16)?
Back
4, because 4 * 4 = 16.
4.
FLASHCARD QUESTION
Front
How do you add √a and √b?
Back
You can only add √a and √b if a = b. In that case, √a + √b = (√a + √b) = n√a, where n is the number of identical radicals.
5.
FLASHCARD QUESTION
Front
What is the process to rationalize the denominator of 1/√a?
Back
Multiply the numerator and denominator by √a to get (√a)/(a).
6.
FLASHCARD QUESTION
Front
What is the value of √(x^2)?
Back
|x|, because the square root of a squared number is the absolute value of that number.
7.
FLASHCARD QUESTION
Front
How do you subtract √a from √b?
Back
You can only subtract √a from √b if a = b. In that case, √b - √a = (√b - √a) = n√a, where n is the number of identical radicals.
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