math

ok i get the whole FOIL thing but what if there's negative numbers? and what do you if there's an addition and a subtraction? ex. (mn-m^2)(-n+m)

you treat negative numbers just like positive numbers (for instance; (6x+3)(2x-2), 1st-6x*2x=12x^2, outer- 6x*-2=-12x, inner- 3*2x=6x, last- 3*-2=-6) get it?

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