Presentation on theme: "Vocabulary... First, we need to know some vocabulary… Expression: a mathematical phrase that is a combination of one or more variables, constants, and."— Presentation transcript:
Vocabulary... First, we need to know some vocabulary… Expression: a mathematical phrase that is a combination of one or more variables, constants, and operation symbols (no equal sign) Equation: a statement that says two mathematical expressions have the same, or equal, value (equal sign)
Variable: a symbol that represents a number; letters are often used as variables Coefficient: a number that is multiplied by a variable in an equation or expression (the number in front of the variable, or letter)
Constant: a number in an equation or expression that is NOT multiplied by a variable Term: a number or variable that makes up an expression or an equation ex: 2, 3x, 5t, x, -7, etc.
Simplifying Algebraic Expressions There are two things that you must be able to do when simplifying algebraic expressions... The first is to be able to use the distributive property. The second is to be able to combine like terms.
Distributive Property Multiply across the parentheses – each element inside the parentheses is multiplied by the element outside the parentheses.