4x x 5 )- 7x x 4 ) 3x 2 12 July 8, 2019 16 32 64 128 4x x 5 )- 7x x 4 )+ 3x 2 12 5 x 7 = 35 7 ⋅ ( x − 4 ) = 5 ⋅ ( x − 2 )