Is it possible to factor $y = x^{2} - 2 x - 15$ $y=x^2 -2x - 15$ ? If so, what are the factors?

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Answer 1 · 2018-08-10T21:15:54

X+3, x-5

...which you can confirm instantly by multiplying the two factors back.

$(x + 3) (x - 5) = x^{2} + 3 x - 5 x - 15 = x^{2} - 2 x - 15$ $(x+3)(x-5) = x^2 + 3x - 5x - 15 = x^2 - 2x - 15$

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Is it possible to factor y=x2−2x−15y=x^2 -2x - 15 ? If so, what are the factors?