I'm trying to find the x coordinates, would it be easier to factorise rather than use completing the squares? by graphing i know the answers to be -3 and 9, its just showing that algebraically
I'm trying to find the x coordinates, would it be easier to factorise rather than use completing the squares? by graphing i know the answers to be -3 and 9, its just showing that algebraically
I find the quadratic formula easiest - especially when . To find the x intercepts set f(x) to 0
However if you've got it in completed square form it would be simpler to use that form.
or as you said
Last edited by e^(i*pi); Oct 25th 2009 at 09:22 AM.
Reason: tidying up latex