Posted by ki on Saturday, March 23, 2013 at 6:33pm.
x squared  9
factor

math  Knights, Saturday, March 23, 2013 at 10:05pm
x^2  9
Difference of squares
(x+y)(xy) = x^2y^2
x^2 = x^2
y^2 = 3^2
So, we get (x+3)(x3) as the answer.