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Mathematics 9 Online
OpenStudy (anonymous):

(x+1)(x+3)=

OpenStudy (anonymous):

x^2 + 3x + x + 3 = x^2 + 4x + 3

OpenStudy (anonymous):

just multiply one by one

OpenStudy (shane_b):

http://www.freemathhelp.com/using-foil.html

OpenStudy (anonymous):

I agree with shane use F.O.I.L F.irst O.utside I.nside L.ast

OpenStudy (jiteshmeghwal9):

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