Factor completely x^3 5x^2 - 3x - 15 July 8, 2019 16 32 64 128 Factor completely x^3 + 5x^2 - 3x - 15 Factor x 3 5x 2 3x 15 Factor the expression x 3 5x 2 3x 15 Factor by grouping x 3 5x 2 3x 15