7x 2 14x 21 July 8, 2019 16 32 64 128 7x 2 14x 21 0 Factor 7x 2 14x 21 7x 3 14x 2 21x Factor completely 7x 2 14x 21 7x 14x 21x 2 2x 7 7-2x 14 2 7x ≥-14