(x^2/2)+(x/20)=(1/10)

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Solution for (x^2/2)+(x/20)=(1/10) equation: 


x in (-oo:+oo)

(x^2)/2+x/20 = 1/10 // - 1/10

(x^2)/2+x/20-(1/10) = 0

(x^2)/2+x/20-1/10 = 0

1/2*x^2+1/20*x-1/10 = 0

DELTA = (1/20)^2-(-1/10*1/2*4)

DELTA = 81/400

DELTA > 0

x = ((81/400)^(1/2)-1/20)/(1/2*2) or x = (-(81/400)^(1/2)-1/20)/(1/2*2)

x = 2/5 or x = -1/2

x in { -1/2, 2/5 }

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