Respuesta :

Assuming you mean 5X^2-15X-20, factoring will get you two answers
(5X-20) and (X+1)
When multiplied together they give you the original equation

Answer:

x+1

Step-by-step explanation:

5x^2 − 15x − 20

5(x^2 - 3x - 4)

5(x-4) (x+1)

therefore, the answer is (x+1)