How do you write $y = x^{2} + 2 x - 15$ $y=x^2+2x-15$ in factored form?

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Answer 1 · 2015-09-16T08:38:17

$y = (x - 3) (x + 5)$ $y=(x-3)(x+5)$

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

How do you write y=x^2+2x-15y=x2+2x−15y=x^2+2x-15 in factored form?