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The values of x such that 2x^2 - 3x + 5 = 0 are m + ni and m - ni where m  and n are positive. What is mn?

 Oct 29, 2020
 #1
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Use Quadratic formula

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

                                           a = 2    b = -3  c = 5     

 

Then you can see   m and n                  

 

  after you have done this for a while you realize that   m*n  = c/a    = 2.5

 Oct 29, 2020

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