Question 398704
grouping ___ (x^3 - 9x^2) - (16x - 144)


factoring ___ x^2(x - 9) - 16(x - 9)


rearranging ___ (x^2 - 16)(x - 9)


factoring (difference of squares) ___ (x + 4)(x - 4)(x - 9)