# How do you factor f(x)=1/4(x^2-2x+15)?

$f \left(x\right) = \frac{1}{4} \left({x}^{2} - 2 x + 15\right)$
No two numbers multiply to 15 and add to $- 2$, so $f \left(x\right)$ can't be factored any more than it already is.