In Algebra, to multiply two binomials a method is defined called as ‘FOIL’ method. FOIL stands for, first, outer, inner and last term. Here,
First means initial terms of each binomial are multiplied together.
Outer means initial term of binomial is multiplied by second term of other binomial.
Inner means inside terms or Numbers are multiplied, which means first term of initial binomial and second term of other binomial are multiplied together.
Last means final term of both binomials are multiplied.
Let’s see the same with help of variable expression:
(P + Q) (R + S),
= (P * R) + (P * S) + (Q * R) + (Q * S),
= PR + PS + QR + QS,
Here, PR is first term, PS is outer or outside term, OR is inner term and QS is last term of binomial.
Important thing to remember about Foil Method is that both P ‘first’ term and outside term is both 'P' last and inner term and so on. In this order of all four terms of binomial expression does not matter.
Foil method definition states that it is a standard method to multiply two binomials.
Binomials are expressions which contain two terms. For example: 2x + 4 is a binomial. Standard form of binomial is a + b.
When we multiply two binomials we will get four terms:
· First: Multiply the first terms of both binomials.
· Outside: Multiply first ...Read More
FOIL method stands for first, outside, inside, and last. This would be the direction that we are going to follow while multiplying the variables in an equation containing 2 binomials in order to reduce it. Reverse Foil Method will be exactly the backward procedure of normal FOIL method. So, by means of reverse - FOIL we can get the original equation of two binomials...Read More