1 3 2x 7 ) 5 6 5 3x July 8, 2019 16 32 64 128 1 3 2x 7 )+ 5 6 5 3x 5 x 7 = 35 5x - 3)(5x + 3) - (2x + 7)(6x - 1) + (x + 2)(1 - 13x) + 13 = 0