Question

How do you factor `3p^3 - 21p^2 - p + 7`?

Answer 1

`color(red)(3p^3−21p^2)color(blue)(-p+7)`

`=color(red)((3p^2)(p-7))+color(blue)((-1)(p-7))`

`=(3p^2-1)(p-7)`