Hi
1)
And (x-y)(x+y)=x²-y²
2) it depends what the question is !
If you need to develop then it is OK
If you need to factor then
3)
i started a A level maths course and have a big half way test and would like some pointers in the right direction please thank you for any help
(x-y)( 1 + 1 )
x y
on this question do i find a common donominator so i get y over xy +x over xy so i would have (x-y)(y+x) then multiply out from here ?
next question
(2p-3q)^2 + (2p-3q)
so i get to the point
4p^2-6pq-6qp+9q^2 +(2p-3q) is this it or what else do i do any help please
and last question i dont even know how to start this
m+1 - m-2
2m-3 2m+3
thank you 4 any help