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The quadratic equation 2x^2 + bx + 82 has a double root. Find all possible values of b.

 Jun 25, 2021
 #1
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The discriminant of the Quadratic Formula must = 0 for this to occur

 

b^2 - 4ac = 0

b^2 = 4ac

b^2 = 4(2)(82)

     b  =  +- sqrt (656)

 Jun 25, 2021

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