simplify the expression

Question

i need help i dont know where to start, i need to simplify the expression

 

−3(??^3−??)+2(??^2+??)+3(??^3−2??)

Answer 1

I don't understand the "??" notation, so I'll use x.

 

First, if you don't see common factors, expand it all out:

   -3x³ + 3x   +   2x² + 2x   +  3x³ - 6x

            2x² - x                     (collect similar terms)

            x(2x-1)                   (factor out an x)