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Mathematics 13 Online
OpenStudy (texaskitten):

(5m – 3)(4m + 7)

OpenStudy (anonymous):

20m^2 +35m -12m -21 = 20m^2 +23m -21

OpenStudy (zzr0ck3r):

\((a+b)(c+d)=ac+ad+bc+bd\) This is called F.O.I.L. we multiply the First numbers in the binomials \(ac\) we multiply the outer number in the binomials \(ad\) we multiply the inner numbers in the binomials \(bc\) we multiply the last numbers in the binomials \(bd\)

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