Respuesta :

Short method: multiply constants
[tex] = ( - 2) \times ( - 3) \times (7) \\ = 6 \times 7 \\ = 42[/tex]

Long mothod: expand it
[tex] = ( {x}^{2} - 5x + 6)(x + 7) \\ = ... \\ = ... + 42[/tex]

Answer: 42