r^2-3r/5+2/25=0

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Solution for r^2-3r/5+2/25=0 equation: 


r in (-oo:+oo)

r^2-((3*r)/5)+2/25 = 0

r^2+(-3/5)*r+2/25 = 0

r^2-3/5*r+2/25 = 0

DELTA = (-3/5)^2-(2/25*1*4)

DELTA = 1/25

DELTA > 0

r = ((1/25)^(1/2)+3/5)/(1*2) or r = (3/5-(1/25)^(1/2))/(1*2)

r = 2/5 or r = 1/5

r in { 1/5, 2/5 }

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