08-06-2014
Mathematics

contestada

1.) (X+9)(x+3)
2.) (y-5)(y^-2y+6)
please help me with solution so that next time i know how to answer for me by this is vey hard to answer.thank you.

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konrad509 konrad509

08-06-2014

[tex] (x+9)(x+3)=x^2+3x+9x+27=x^2+12x+27\\\\ (y-5)(y^2-2y+6)=y^3-2y^2+6y-5y^2+10y-30=\\ =y^3-7y^2+16y-30[/tex]

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