Which expression is equivalent to the distance between -13 and -4 on a number line select all that apply

For this case we have:

We locate the given points on the negative axis of the x coordinate

We shadow the region between both points

The shaded region will be the difference or distance between both numbers.

Algebraically, the difference is given by:

See attached image

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option