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FOIL

Multiplication of binomials, the FOIL method.
The FOIL method is a way to multiply binomials. "FOIL" is an acronym to remember a set of rules to perform this multiplication. To FOIL you multiply together all of the following:

• F: First terms
• O: Outer terms
• I: Inner terms
• L: Last terms
and write them as a polynomial.

Multiply (3x+1)(x + 4)
(3x+1)(x + 4)=3x2+12x+x+4=3x2+13x+4

 $$$-7x^2-2x$$\cdot$$-7x-8$$=$
 Solution: x3 x2 x