What is the surface area this wedge?

100ft

Step-by-step explanation:

Look at the length

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

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative