SOLUTION: Is x-3 a factor of 2x^3-9x^2+7x+8=0

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Question 607079: Is x-3 a factor of 2x^3-9x^2+7x+8=0
Answer by lawdej(58) About Me  (Show Source):
You can put this solution on YOUR website!
check by substituting x=3 in the equation.if your result is zero it is a factor
here is the work
2x^3-9x^2+7x+8=2*3^3-9*3^2+7*3+8=2*27-(9*9)+21+8=54-81+29=83-81=2
so x-3 is not a factor of 2x^3-9x^2+7x+8=0