Factor the polynomial.

$x^2-13x+40$

Factor the polynomial.

$x^2-2x-15$

Factor the polynomial.

$4x^2-19x+12$

Factor the polynomial.

$3x^2-2x-5$

Factor out the greatest common factor. $18x+27$

In Exercises 1–10, factor out the greatest common factor. 3x²+6x