lets say it was (x - 8)(x + 5), could you expand that?

expand the first two first, and then multiply what you got by the (x - 3). how? first multiply everything by the x and then multiply everything by the -3

when finding the derivative, all that is needed is the power rule:

and of course, if there are constants in front of the x's, you just leave them and multiply what you got by them since . here, your is

(why did you choose such big numbers? )