Question 394970
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Hi
 {{{S = 2sqrt( I - 5)}}}
 {{{S/2 = sqrt( I - 5)}}}   |squaring both sides of the equation
 (S/2)^2 = I - 5    | 17/2 = 8.5
  (8.5)^2 + 5 = I
  72.25 + 5 = I
     77.25 = I