Question:
Attempt:
I simplifyied using the equation and i reached to a point where my answer is
I have no idea what to do next to prove...
Thank you..
It came from combining like terms, I could have rearranged them first in an extra step which would be going from:
to
I could also have then simplified each set of brackets to give:
this means the 'main' equation will be :
As is on the top and bottom it can be cancelled to give