SOLUTION: Use factor theorem to solve 2x^3+7x^2+2x-3

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Question 366544: Use factor theorem to solve 2x^3+7x^2+2x-3

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

Note: x = -1 is a solution (-2 + 7 -2 - 3 = 0)



       2x^2 + 5x -3

      _______________________

x +1 | 2x^3+7x^2+2x-3 



2x^2 + 5x -3

(2x - 1)(x + 3 )= 0

(2x - 1)=0

x = 1/2

(x + 3 )= 0

x = -3

solution set is {-3, -1, 1/2}