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 e The irrational transcendental real number that is the base of natural logarithms  (.) An estimated value for e is 2.71828182846.... You can remember e = 2.71828 as Andrew Jackson was the 7th president of the United States of America who was elected 2 times, first in the year 1828. Edge A line along which two faces of a solid or two surfaces meet. Elimination The process of removing variables from a set of simultaneous equations. Systems of linear equations.  Endpoint A maximal or minimal point of a segment on a line or an interval.  Equality A statement that indicates two quantities are equal.  Equation The proposition that asserts that two expression involving one or more variables have the same value. Linear Equations      Quadratics Equations  Irrational equations   Exponential equations   Logarithmic equations Equidistant Being the same distance form one or more given points, lines. Evaluating an algebraic expression  The process of substituting the specified values of the variables in the expression and performing the operations to find the value of that expression.  Evaluating Expressions Equilateral The term is usually applied to polygon that have all sides equal. For example an equilateral triangle has all their sides equal.  Exponent A number or expression written superscript to another and indicating the power to which the latter is to be raised.  Law of exponents Extreme The first or last term of a proportion. For example, in the proportion a/b=c/d, a and d are the extremes.
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