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Mathematics 9 Online
OpenStudy (anonymous):

(x-3)^2 = ?

OpenStudy (saifoo.khan):

Simply write it twice.

OpenStudy (saifoo.khan):

(x-3)(x-3) FOIL

OpenStudy (turingtest):

(x)(x)-3x-3x+(3)(3) x^2-3x-3x+9 x^2-6x+9 in case you don't know how to FOIL

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