6x 3 3 3x 7 July 8, 2019 16 32 64 128 6x 3 2 3 2 3x 7 7x 3 7x )-( 6x 3 3x 6x 2 5x 3 )( 3x 2 7x 3 6x 2 3x 3 7x 3 4x 2 5x 3 3x 7 )-( 2x 3 6x 2 x 6x+3 7=73 9
