bella: x^2+2x=3
We can rewrite this as x
2+2x-3 = 0.
We then use factoring to find (x+3)(x-1) = 0 (since 3-1 = 2 and 3*-1 = -3)
This gives us the answer of x = -3 or x = 1.
If you don't understand how I did the factoring, this source might help you a little (http://www.mathsisfun.com/algebra/factoring.html)
Reinout
+2353 
