7 5x 3 x 2 ) 5 July 8, 2019 16 32 64 128 7 5x 3 x 2 )+ 5 7 5x (- 3 )= 5 3x 2 5x 3 x 11 )= 7 2x 5 )+ 2 3 5x 7 x 4 1 2 5 4x 8 1 5 5x 7 =( 2 3 x 1 5x 7 3 1 6 x 2 5 X 7 )( 5x 2 3x 5 F x )=( 5x 3 )( x 2 )( 3x 7 )( x 5 3 5x 2 3x x 1 7 =- 5 21 5x 3 4 3x 2 5 x 6 7 5x 7 2 2x 5 ) 2 3 x 1