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Mathematics 15 Online
OpenStudy (anonymous):

Factor: x2 + 2x - 15 (x + 1)(x - 12) (x - 3)(x + 5) (x - 3)(x - 5) prime

OpenStudy (anonymous):

second one. :)

OpenStudy (anonymous):

x^2+5x-3x-15 x(x+5)-3(x+5) (x-3)(x+5)

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