(x - 1)*(x - 5)
(x - 1*1)*(x - 1*5)
(-1 + x)*(-5 + x)
1*(x - 1)*(x - 5)
(1*(x - 1))*(x - 5)
(-1.0 + x)*(-5.0 + x)
2 5 + x - 6*x
5 + x^2 - 6*x