30 May 2008, 12:12 PM
yeah, but you dont normally throw in something almost random.
what you did was took both sides of the equasion and made it fundamentally lopsided. you cant just 'double' a factor. you can take away factor's if they exsist on both sides of the equasion.
one side has two a^2's and the other has two 2ab's
otherwise the only way that I'd see it possible of adding it like that would be:
a^2 - (a^2 + 2ab) = 2ab - (a^2 + 2ab)
what you did was took both sides of the equasion and made it fundamentally lopsided. you cant just 'double' a factor. you can take away factor's if they exsist on both sides of the equasion.
one side has two a^2's and the other has two 2ab's
otherwise the only way that I'd see it possible of adding it like that would be:
a^2 - (a^2 + 2ab) = 2ab - (a^2 + 2ab)