(x + 5)*(5*a + 1) - (x + 5)*(2*a - 8)
(x + 5)*(5*a + 1) - (x + 5)*(2*a - 1*8)
3*(3 + a)*(5 + x)
3*(3 + a)*(5 + x)
1*(a + 3)*(x + 5)
(1*(a + 3))*(x + 5)
(3 + a)*(15 + 3*x)
(3 + a)*(15 + 3*x)
45 + 9*x + 15*a + 3*a*x
45 + 9*x + 15*a + 3*a*x
(1.0 + 5.0*a)*(5.0 + x) - (5.0 + x)*(-8.0 + 2.0*a)
(1.0 + 5.0*a)*(5.0 + x) - (5.0 + x)*(-8.0 + 2.0*a)