Terms from chapter 8

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Perfect Square
•Squares of whole
Square root
• One of two equal factors of a
number. If a squared equals b
then a is the square root of b.
The square root of 144 is 12
because 12 squared is 144.
Radical Sign
•The sign used to
represent a
nonnegative square
Principle Square Root
•A nonnegative
square root
Irrational Number
•Numbers that
cannot be
expressed as a/b.
Real Number
•Irrational numbers
together with rational
numbers to form the
set of all numbers.
Natural Numbers
•1, 2, 3, 4...
Whole Numbers
•0, 1, 2, 3, 4, 5...
• The whole numbers
and their opposites.
• ...-3, -2, -1, 0, 1, 2, 3...
Rational Numbers
• Any number that can
be expressed in the
form a/b where a and b
are integers and b is
not equal to 0.