Please help with Algebra Problem. Posted in comments below.

Question

candyme · Answer

$$(x^2+11xy-3y^2)+(-2x^2-xy+4y^2)$$Please show me how to do this, because I do not understand and it is frustrating me.

turingtest · Answer

take it away saifoo!

saifoo.khan · Answer

We are going to get rid of the parenthesis first.

$$(x^2+11xy-3y^2)+(-2x^2-xy+4y^2)$$
$$x^2 +11xy-3y^2-2x^2-xy+4y^2$$

Now we are going to add the terms with the same variables.
... (cont)

saifoo.khan · Answer

$$x^2 +11xy-3y^2-2x^2-xy+4y^2$$
Arrange,
$$x^2-2x^2+11xy-xy-3y^2+4y^2$$
$$-x^2+10xy+y^2$$Answer^^^

phi · Answer

This might help http://www.khanacademy.org/video/simply-a-polynomial?playlist=Developmental+Math

candyme · Answer

Oh, now I get it. I think my brain was trying to make it harder than it was.

saifoo.khan · Answer

that was easy, but expand the problem.. answer is always hidden in them! ;)

candyme · Answer

Thanks for the help saifoo. Thanks for the resource phi.

saifoo.khan · Answer

No problem! ^_^