2x 1 x 2 6x 9 1 2x x 2 3x July 8, 2019 16 32 64 128 2x 9 (2x ^ 2 - x + 1) ^ 2 + 6x = 1 + 9x ^ 2 6x2 + 9x − 1 = ( 2x + 1)( 2x − 1 ) 6x ^ 2 + 9x - 1 = (2x + 1)(2x - 1)
