Question

Factor: x(x-3)^3 -28(x-3)^2

Answer 1

well removing the common factor you get

\[(x - 3)^2 [ x(x - 3) - 28]\]

which becomes

\[(x - 3)^2[x^2 - 3x - 28]\]

the quadratic inside the square brackets can be factored.

hope it helps