4x 2 10x 18 July 8, 2019 16 32 64 128 10x 4x 2 − 18x 4x 28 10x 2 180 4x 3 18x 2 10x − 3 4x − 2 10x 18 10x=4x 2 −18x 10 4x-2 18 2x4x 10