(x + 5)*(x - 5)
(x + 5)*(x - 1*5)
2 -25 + x
-25 + x^2
1*(x + 5)*(x - 5)
(1*(x + 5))*(x - 5)
(5.0 + x)*(-5.0 + x)
(-5 + x)*(5 + x)