Originally Posted by
Natasha1 I need help with factorising the following:
a) (c+d)^2 - d^2
I got c^2 + 2cd + d^2 - d^2 which is equal to c^2 + 2cd, is this correct please?
It's almost complete, notice that "c" is common...
c(c+2d) is fully factored.
Also, the method shown by TheEmptySet is very useful.
b) 2w^2 + w - 3
How do you do this again please (need simple and clear advice)? Thanks