Respuestas

2013-04-10T07:07:29+02:00

4x^2 - 70x + 66 = 4x^2 - 66x - 4x + 66 = (4x^2 - 66x) - (4x - 66) = 2x(2x - 33) - 2(2x - 33 )

 

                            = (2x -33)(2x - 2)