Respuesta :

chudung1976

Answer:

The set of solution is {-9,-4}

Step-by-step explanation:

*  We use this result: A.B=0 , that means A=0 or B=0.

*  (x+9)(x+4)=0, then x+9=0 or x= - 9

Or x+4=0, x= - 4.

This equation has 2 solutions: - 9 and - 4.

Hope that useful for you.

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