Respuesta :

sqdancefan
It factors as ...
  f(x) = (x² -25)(x² +1) = (x -5)(x +5)(x² +1)
A root will make one of the factors equal to zero. The quadratic factor has only complex roots.

The real roots are x = ±5.
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azrayouhanna2

Answer:

5, -5

Step-by-step explanation:

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