In math, expanded form can refer to any type of expression, equation or notation that is completely broken down into its individual parts. Expanded form is commonly used in teaching students place value and factoring.
Know MoreIn discussion of place value, expanded form is when a number is broken down into each place value with an addition sign placed between each number. For example, 356 would be 300+50+6 in expanded form. When an expression is factored, it changes the expression into expanded form. x^{2}-4 would factor into the expanded form of (x-2)(x+2). The expanded form of quadratic equations is often more useful in graphing than the standard form.
Learn more about AlgebraDelta refers to change in mathematical calculations. In some cases, this means a difference between two values, such as two points on a line. In other cases, it refers to the rate of change, such as in a derivative.
Full Answer >In math, FOIL is an acronym that reminds people how to expand the multiplication of two expressions in parentheses. FOIL stands for First, Outside, Inside, and Last, which is the order in which one should multiply the terms in the parentheses.
Full Answer >Elimination in mathematics refers to the elimination method, also called the addition method, which is used to solve basic algebraic problems by comparing two equations in order to find what their variables equal. This method uses two equations to cancel out a variable in one of the equations.
Full Answer >Punchline math is a system of learning how to solve mathematical problems using riddles, according to Marcy Mathworks. The goal of punchline math is to reward the student with the answer to the jokes or puzzles.
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