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What is the sum of the roots of the equation 4x^3 + 5x^2 - 8x = 3x^3 - x^2 + 12x?  Express your answer as a decimal to the nearest hundredth.

 Jul 23, 2022
 #1
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Rearrange as

 

x^3  + 6x^2  -  20x  =  0

 

We have the form  ax^3 + bx^2 + cx + d

 

Sum of the roots   =  -b/ a  =    -6/1   = -6

 

 

cool cool cool

 Jul 23, 2022

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