5 2x 1 2 20 July 8, 2019 16 32 64 128 2 2x * 5 1 x 20 5 1 2x )= 1 2 8 20x 20 2 )+ 5 2x 1 )+ 10 7x 6 3x 2 )- 5 2x 1 )= 20 Solve 6 3x 2 )- 5 2x 1 )= 20 10x 5 1 x )= 3 2x 2 )- 20 2x 1 2008 y 2 5 2008 x yz 0 2x 5 2 x 2 5
