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Math Definitions - Letter F

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FOIL method

Definition of FOIL method

The FOIL method is technique for remembering how to multiply two binomial expressions together.

"FOIL" stands for "First, Outermost, Innermost, Last". This is the order of multiplying the terms. You take the sum of

The product of the first terms from the two brackets.
The product of the two outermost terms.
The product of the two innermost terms.
The product of the last terms from the two brackets.

So,

(a + b)(c + d) = ac + ad + bc + bd

For example, \((x + 3)(y + 2) = xy + x(2) + 3y + (3)(2) = xy + 2x + 3y + 6\).

Description

The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.

Audience

Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter F

Author: Subject Coach
Added on: 6th Feb 2018

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