Hi guys basically I have got a bit of a problem with completing the square...
If I had to complete the square of x2-14x+36=0
I would form the square of (x-7)2
I would then expand the brackets to get x2-14x+49
I would then combine this with the original equation to get x2-14x+49+36=0
I then tidy it up to get x2-14x+85=0
I then take 85 from both sides to leave me with x2-14x=-85
My reaction to that would be to try and remove the 2 by square rooting each side but then I would be rooting a negative? Can someone give me some help by talking me through what to do as opposed to just showing me a page of maths? Sorry but I just don't learn particularly well that way.
Thanks in advance for anyone who helps me, it is appreciated.