(x - 14)*(x + 14)
(x - 1*14)*(x + 14)
1*(x + 14)*(x - 14)
(1*(x + 14))*(x - 14)
2 -196 + x
-196 + x^2
(14.0 + x)*(-14.0 + x)
(-14 + x)*(14 + x)