You want to write the numerator as . Then you can factor out and cancel with the denominator.
I'm having a hard time using:
to find the derivative of
I need to do it using
and the other way. I did fine finding it with the second method and came up with
Here is the order that I've tried this with the first method.
I'm not sure what to do at this point. Did I mess up and can some how use factor by grouping and then cancel out (x-a) and use substitution to get my derivative?
Don't I end up with just doing that?
I'm not sure how I get -8(x+a) to turn into -8(x-a) But to continue.
Hate being bad at math :/
Edit: Actually, I think it was my subtraction error that got me.
Edit: I think I see how its done now.
I'm not sure how I get -8(x+a) to turn into -8(x-a) But to continue.
Edit: I see now, has be like that in order to get a positive a.
Cancel out my two 's
Then I end up with: