Question 465261
use the cubic function f(x)=x^3+x^2-3x+1 to complete the remaining problems 
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1) what are the possible roots of this function 
Possible roots: +1 and -1
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2)test your possibilities synthetically to determine which one(s) is(are) valid
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1)....1....1....-3....1
.......1....2....-1...|..0

Quotient: x^2+2x-1
Remainder: 0
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The root is x = 1.
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Note: Notice that the coefficients of the cubic add
up to zero.  That tells you x = 1 is a root.
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Cheers,
Stan H.