13 2x 5 x 3 July 8, 2019 16 32 64 128 2x y 5 x 3y 13 X 4 8 2x 5 13 3 x 1 5x 3 2x 5 x 13 13 2x 5 )- 6 x 3 )- 20x 80 2x 13 x 5 6x 3 2x 13 5 x 3 11 x 9 5 1 2x 13 5 x 3 11 x 8 5 2 3 2x 5 x 13 6 5 2x 3 )-( x 8 )= 13 2x 5 3x 1 )= x 13
