Respuesta :
factor out 4x first
4x(6x² + x - 1)
factor the rest as normal, knowing that what adds to give the middle term multiplies to give the last term.
4x(2x + 1)(3x - 1)
4x(6x² + x - 1)
factor the rest as normal, knowing that what adds to give the middle term multiplies to give the last term.
4x(2x + 1)(3x - 1)