← Solving equations Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All algebraic expression A mathematical phrase involving at least one variable and sometimes numbers and operation symbols. evaluate To find the value of a numerical or algebraic expression constant a value that does not change; a number equation a mathematical statement that two expressions are equal exponent a mathematical notation indicating the number of times a quantity is multiplied by itself inverse operation Opposite operations that undo each other; add and subtract or multiply and divide variable a letter that is used to represent one or more numbers