associative property of addition | For three or more real numbers, the sum is the same regardless of how you group the numbers. For example, (6 + 2) + 1 = 6 + (2 + 1). |
base | The expression that is being raised to a power when using exponential notation. In 53, 5 is the base, which is the number that is repeatedly multiplied. 53 = 5 • 5 • 5. In ab, a is the base. |
binomial | A polynomial with exactly two terms, such as 5y2 – 4x and x5 + 6. |
coefficient | A number that multiplies a variable. |
commutative property of addition | Two real numbers can be added in any order without changing the sum. For example, 6 + 4 = 4 + 6. |
constant | A symbol that represents a quantity that cannot change. It can be a number, letter or a symbol. |
degree | The value of an exponent. |
degree of a monomial | The degree of a monomial is the power to which the variable is raised. For example, the monomial 5y2 has a degree of 2. If the monomial contains several variables then the degree of the monomial is the sum of the degree of all the variables. For example, the monomial 7x2y3 has a degree of 5. |
degree of a polynomial | The highest exponent or sum of exponents of a term in a polynomial. For example, 7x2y3 + 3x2y − 8 is a 5th degree polynomial because the highest sum of exponents in a term is 2 + 3 = 5. |
exponent | When a number is expressed in the form ab, b is the exponent. The exponent indicates how many times the base is used as a factor. Power and exponent mean the same thing. |
exponential notation | A shorter way to write repeated multiplication. For example, 24 means 2 • 2 • 2 • 2. Two is used as a factor 4 times. |
factor | A number or mathematical symbol that is multiplied by another number or mathematical symbol to form a product. For example, in the equation 4 • 5 = 20, 4 and 5 are factors. |
like terms | Terms that contain the same variables raised to the same powers. For example, 3x and −8x are like terms, as are 8xy2 and 0.5xy2. |
monomial | A polynomial with exactly one term. 4x, −5y2, and 6 are all examples of monomials. |
polynomial | A monomial or the sum or difference of two or more monomials. |
power rule for exponents | To raise a power to a power, multiply the exponents. (xa)b = xa•b |
product raised to a power rule | The product of two or more non-zero numbers raised to a power equals the product of each number raised to the same power: (ab)x = ax • bx |
product rule for exponents | To multiply two exponential terms with the same base, add their exponents. (xa)(xb) = xa+b |
quotient rule for exponents | For any non-zero number x and any integers a and b: |
scientific notation | A positive number is written in scientific notation if it is written as a x 10n where the coefficient a has a value such that 1 ≤ a < 10 and n is an integer. |
term | A number or product of a number and variables raised to powers. 4x, −5y2, 6, and x3y4 are all examples of terms. |
trinomial | A polynomial with exactly three terms, such as 5y2 – 4y + 4 and x2 + 2xy +y2. |