hiya, am now currently on 'equations and inequalities involving surds'
question is (2root5) + 5 = root5 - X
i'm trying to get all the x's on one side, then taking them out of the terms...
so i've got...
then, taking X out of it makes,
is that correct?
running through the question seems to get me the answer
whereas they get
so i thought that somehow i was getting the answer to -x, instead of x. but i don't know where the X changed from a positive to a negative...