How do you factorise the following x2+2xy+y2-z2
Follow Math Help Forum on Facebook and Google+
Originally Posted by Niamh Dixon How do you factorise the following x2+2xy+y2-z2 $\displaystyle (x + y)^2 - z^2$ $\displaystyle = \left( (x + y) - z \right) \left( (x + y) + z \right)$
What happened to the 2xy? TKS
Originally Posted by Niamh Dixon What happened to the 2xy? TKS $\displaystyle x^2 + 2xy + y^2 = (x + y)^2$ Do you agree? MY 1th POST!!!
Cheers thanks for your help
Originally Posted by janvdl $\displaystyle x^2 + 2xy + y^2 = (x + y)^2$ Do you agree? MY 1th POST!!! Haha, congratz ^^ (like i'm old in the forum ;p)
Originally Posted by wingless Haha, congratz ^^ (like i'm old in the forum ;p) Thank you! I'm finally a contributor
View Tag Cloud