50/(r-2.5)+50/(r+2.5)

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Solution for 50/(r-2.5)+50/(r+2.5) equation: 


D( r )

r+2.5 = 0

r-2.5 = 0

r+2.5 = 0

r+2.5 = 0

r+2.5 = 0 // - 2.5

r = -2.5

r-2.5 = 0

r-2.5 = 0

r-2.5 = 0 // + 2.5

r = 2.5

r in (-oo:-2.5) U (-2.5:2.5) U (2.5:+oo)

50/(r-2.5)+50/(r+2.5) = 0

(50*(r+2.5))/((r-2.5)*(r+2.5))+(50*(r-2.5))/((r-2.5)*(r+2.5)) = 0

50*(r+2.5)+50*(r-2.5) = 0

100*r = 0

(100*r)/((r-2.5)*(r+2.5)) = 0

(100*r)/((r-2.5)*(r+2.5)) = 0 // * (r-2.5)*(r+2.5)

100*r = 0

100*r = 0 // : 100

r = 0

r = 0

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