SOLUTION: Determine whether the given value of x is a root of the given polynomial equation. -2+x+2x^2-x^3=0, x=-1

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Determine whether the given value of x is a root of the given polynomial equation. -2+x+2x^2-x^3=0, x=-1      Log On


   

Question 240017: Determine whether the given value of x is a root of the given polynomial equation.
-2+x+2x^2-x^3=0, x=-1
Answer by JimboP1977(311) About Me  (Show Source):
You can put this solution on YOUR website!
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+-2%2Bx%2B2x%5E2-x%5E3%29+
If you put -1 into the equation you get zero. This is confirmed by the above graph.