What polynomial has roots of -4,-1, and 6?

A polynomial with the roots r1,r2 and r3 has factors of
(x-r1), (x-r2) and (x-r3) in it, it can be written in form
c(x-r1)ᵃ(x-r2)ᵇ(x-r3)ⁿ
where c is a constant and a,b, and n are the powers

so roots of -4,-1 and 6 are factors of
(x-(-4))(x-(-1))(x-6)=(x+4)(x+1)(x-6)
in expanded form
x³-x²-26x-24