3iii how to get rid of ab?

I'm running out of ideas to get an expression for p^2. Ive tried synthetic division and other substitutions but keep getting left with nasty a's and b's left in my expression. can anyone give me a hint or starting point please

factor out b-a

i'm not sure it this is correct but i divided by (b-a) on both sides. i then stated this couldn't be a solution as b doesn't equal a so you can take it out (like you did earlier in the question in part ii). i hope this is helpful!

THANKS

Thank you, i've got it now . I was trying to find an expression only using p=b+a and q=.... Should've used the other equation I just derived

Integral

How does the shown. It relate to the integral, cannot seem to get this part of the question going

?

Can you state your question a little more clearly?

It's ok, I did it

It's ok, I did it