Hi,

7m^2-14m+1=-5

7m^2-14m+6= 0

7(m-1)^2 -7 + 6 = 0

7(m-1)^2 =1

   m = 1 ± sqrt(1/7)

   m = 1 ± sqrt(7)/7



7m^2-14m+6= 0   ||may also use the Quadratic formula

m = (14 ± 2sqrt(7))/14 =  1 ± sqrt(7)/7 

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