(x - 5)*(9 - x)
(x - 1*5)*(9 - x)
1*(x - 5)*(x - 9)
(1*(x - 5))*(x - 9)
-(-9 + x)*(-5 + x)
(9.0 - x)*(-5.0 + x)
2 -45 - x + 14*x
-45 - x^2 + 14*x