1. ## polynomial

Hi guys i just forgot how to expand this equation . Pls help me how to do this. Thanks in advanced.
(x^2+3x-1)^2

2. Hi,
(x^2+3x-1)^2
=(x^2)^2+(3x)^2+(-1)^2+2[(x^2)*(3x)+(x^2)*(-1)+(-1)*(3x)]
=x^4+7x^2+6x^3-6x+1

3. ## thank!

Thank you very much. That was easy. hehehe Now I remember how to do it. Thanks to you.