Respuesta :

TheUnknownScientist

Answer:

The answer is x² + x - 20

Step-by-step explanation:

(x – 4)(x + 5)

x(x + 5) -4(x + 5)

x² + 5x – 4x – 20

x² + x - 20

Thus, The answer is x² + x - 20

-TheUnknownScientist

akhil9553386

Answer:

x² + x -20

Step-by-step explanation:

x(x + 5) -4(x + 5)

x² + 5x - 4x - 20

x² + x - 20