4 x 4 6x 4 July 8, 2019 16 32 64 128 4 4x 2 - 6x 4 4 8x 4 4x 3 4 6x 4 2 6x 4 )+ 2 4 x 4 X 4 4x 3 7x 2 6x 4 y 2 4 x 4 x 4 x 4 + 4 = 6