Question 1058686
Show that the binomial is a factor of the polynomial. Then factor the polynomial completely. 
s(x)=x^4+4x^3−64x−256; x+4
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Using synthetic division::
-4)....1....4....0....-64....-256
.......1....0....0....-64...|..0

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s(x) = (x+4)(x^3-64)
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s(x) = (x+4)(x-4)(x^2 + 4x + 16)
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Cheers,
Stan H.
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s(x)=