v^2/20+v-75

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Solution for v^2/20+v-75 equation: 


v in (-oo:+oo)

(v^2)/20+v-75 = 0

1/20*v^2+v-75 = 0

DELTA = 1^2-(-75*1/20*4)

DELTA = 16

DELTA > 0

v = (16^(1/2)-1)/(1/20*2) or v = (-16^(1/2)-1)/(1/20*2)

v = 30 or v = -50

v in { -50, 30 }

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