T tara12 New member Joined Feb 21, 2012 Messages 1 Feb 21, 2012 #1 1.) X^2+2xy+y^2 2.) a^2-4ab+4b^2 3.). x^2+6xy-7y^2 I know how to do this with just the numbers but not sure when you use the letters please help.
1.) X^2+2xy+y^2 2.) a^2-4ab+4b^2 3.). x^2+6xy-7y^2 I know how to do this with just the numbers but not sure when you use the letters please help.
