Question 293591
hours, huh...


grouping ___ (8x^3 + 4x^2) - (18x + 9) = 0


factoring ___ 4x^2(2x + 1) - 9(2x + 1) = 0


rearranging ___ (4x^2 - 9) (2x + 1) = 0


factoring (difference of squares) ___ (2x + 3) (2x - 3) (2x + 1) = 0


x = ±3/2 , -1/2