I tried to use the FOIL method with no success for the 1st question I got 4+6x+6x+9x^2 after multipliying the first two brackets...am I doing it wrong?
I tried to use the FOIL method with no success for the 1st question I got 4+6x+6x+9x^2 after multipliying the first two brackets...am I doing it wrong?
Thanks
No, that's good so far. You can simplify this to
So to finish, you need to calculate . Writing this as: may help.