(x^2)/2+2x=30

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Solution for (x^2)/2+2x=30 equation: 


x in (-oo:+oo)

(x^2)/2+2*x = 30 // - 30

(x^2)/2+2*x-30 = 0

1/2*x^2+2*x-30 = 0

DELTA = 2^2-(-30*1/2*4)

DELTA = 64

DELTA > 0

x = (64^(1/2)-2)/(1/2*2) or x = (-64^(1/2)-2)/(1/2*2)

x = 6 or x = -10

x in { -10, 6 }

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