###### Example7.1.9

We will factor $$12x^2+15x\text{,}$$ the same polynomial from the example in Algorithm 7.1.4, so that you may compare the two styles.

 $$12x^2$$ $$15x$$
 $$3x$$ $$12x^2$$ $$15x$$
 $$4x$$ $$5$$ $$3x$$ $$12x^2$$ $$15x$$

So $$12x^2+15x$$ factors as $$3x(4x+5)\text{.}$$

in-context