The FOIL Method is a process used in algebra to multiply two binomials.
f= first terms
o= outer terms
i= inner terms
l= last terms
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The foil method in algebra is used to "multiply linear binomials."The FOIL method is used in elementary algebra as a guide for solving algebraic problems.
Yes FOIL method can be used with quadratic expressions and equations
(a+b)(b-a)
If you mean (4x+7)(7x+6) then it is 28x^2 +24x+49x+42 using the FOIL method
It is only not needed if you know of another method. If FOIL is the only way you know to multiply two binomials, then it is definitely needed.