For what value of k, is 3 a root of the equation 2x^2 + x + k = 0?

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asked Feb 1, 2018 in Mathematics by Kundan kumar (49,132 points) 34 382 1020
edited Feb 1, 2018 by Vikash Kumar

For what value of k, is 3 a root of the equation 2x+ x + k = 0?

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answered Feb 1, 2018 by Vikash Kumar (144,729 points) 8 11 21
 
Best answer

3 is a root of 2x2 +x+k =0, when

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