Respuesta :

Your factors are (x+7)(x-5)(x+3)

multiply the first 2 to get (x^2 + 2x - 35)(x+3)

Now multiply in the 3rd one
x^3 + 2x^2 - 35x + 3x^2 + 6x - 105 now combine like terms
x^3 + 5x^2 -29x - 105 or A

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