Factor x 4 81 July 8, 2019 16 32 64 128 Factor x 4 81 completely Factor x 4 81x 2 Factor x 4 81 0 Factor x 4 81y 4 Factor x 4 18x 81 Fully factor x 4 81 Factor x 4 18x 2 81 Factor x 4 18x 2 81 completely Factor x 2 9x 81 4 How do you factor x 4 81 Factor completely x 4 − 81