5 1 6x 2 2 7 July 8, 2019 16 32 64 128 5 6x 1 2 7 8 1 2 6x 5 )- x 7 2 − 2 1 6x )+ 2 − 2 7x 5 4 3x 1 6x 8x 2 2 3 5 7x 9 5 2x 2 1 6x 2 7 12 5 1x-2 6x=4