2 2x 5 x 7 July 8, 2019 16 32 64 128 3 x 2 )+( 2x 5 )= x 7 2 2x 3 x 5 7 3x 2x 5 x 2 7 0 2x 5 )( x 2 5x 7 3x 2 2x 5 x 2 4x 7 2x 5 x 2 4 6 7x 2x 5 )( x 2 7x 2 5 x 7 2 3 2x 14 3 2x 5 )+ 4 2 x 7 3 2x 5 4 2 x 7 6 2 2x 5 5x 7 2x 2 7x 5 x 1 2 2x 4 )- 7 5 x 1 4x 7 2 2x 5 )( x 1 )=- 1
