((8/b-8)-(5/8-b))

Solution for ((8/b-8)-(5/8-b)) equation:

D( b )

b = 0

b = 0

b = 0

b in (-oo:0) U (0:+oo)

b+8/b-(5/8)-8 = 0

b+8/b-5/8-8 = 0

1*b^1+8*b^-1-69/8*b^0 = 0

(1*b^2-69/8*b^1+8*b^0)/(b^1) = 0 // * b^2

b^1*(1*b^2-69/8*b^1+8*b^0) = 0

b^1

b^2+(-69/8)*b+8 = 0

b^2+(-69/8)*b+8 = 0

DELTA = (-69/8)^2-(1*4*8)

DELTA = 2713/64

DELTA > 0

b = ((2713/64)^(1/2)-(-69/8))/(1*2) or b = (-(-69/8)-(2713/64)^(1/2))/(1*2)

b = ((2713/64)^(1/2)+69/8)/2 or b = (69/8-(2713/64)^(1/2))/2

b in { (69/8-(2713/64)^(1/2))/2, ((2713/64)^(1/2)+69/8)/2} 

b in { (69/8-(2713/64)^(1/2))/2, ((2713/64)^(1/2)+69/8)/2 }