2 3 x 8 )- 4x 9 July 8, 2019 16 32 64 128 2 3x 8 )+ 4x 9 23 2 4x 5 )- 3 x 6 )= 9x 8 7x 2 4x 3 )= 8 x 9 )- 30 7 2 x 3 6 9 4x 8 9 x 8 = 3 x 3 = 9 2^x + 8^x = 130