You can
put this solution on YOUR website! Use polynomial long division,
x^3 + x^2 + x + 1
___________________________
x-1 | x^4 + 0x^3 + 0x^2 + 0x - 1
- (x^4 - x^3)
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x^3
- (x^3 - x^2)
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x^2
- (x^2 - x)
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x - 1
- (x - 1)
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0
.
.
.
