If I missed a definition, let me know and I'll put it on.
addition, subtraction, multiplication, division
collections of numbers, operation signs, and indusion symbols
finding the number for which the expressions stands
a letter representing a number
numbers that are added or subtracted from each other.
two numbers that their sum is zero
two numbers that product equals 1
multiplying by its reciprocal
an expression meaning to interchange their positions
to associate two of the numbers in an expression means to group them with parenthesis so that the operation between them is done first
the property of a mathematical symbol is a fact that is true concerning the system
a property that forms the basis of a mathematical system. assumed without proof
two terms in an expressions are like terms if they have the same variables raised to the same power
the numerical coefficient of a term is the constant that is multiplied by the variables
in an expression c is a common factor if c is a factor of each term