Respuesta :

sqdancefan

Answer:

  3

Step-by-step explanation:

There are a significant number of minus signs here. We can simplify it a bit by factoring out -x:

  = -x(x +4)

When we substitute x = -3, we get ...

  = -(-3)(-3 +4)

  = 3(1)

  = 3

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