4 x 2 ) 5 2x 9 July 8, 2019 16 32 64 128 4 x 2 )+ 5 2x 9 4 x 5 )+ 3 2 2x 9 3x 4 2 x 5 )= 9x 8 2x 4 3x 7 )- 2 x 15 )= 5 3 2x 9 3 2 x 4 )+ 5 2x =-( 9x 3 )+ 4x 4 6 x )- 2 3 x )- 5 9 5 2x 4 x 5 2x 9x 2 4 2x 9x 2 4x 5 2x 4 x 12 9 2x 1 )= 4 x 5 2 (- xy 2 x 2x 9y 5 4 2 x 5 )- 9x 12 4 2x 3