Question 193823
Divide x^4 + x^2 -80 by ( x + 3) 
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Use synthetic division:
-3)....1....0....1....0....-80
........1...-3....10...-30..|..10

Quotient: x^3 - 3x^2 + 10x - 30 
Remainder: 10

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Cheers,
Stan H.