1/2a^2+a-12=0

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Solution for 1/2a^2+a-12=0 equation: 


a in (-oo:+oo)

(1/2)*a^2+a-12 = 0

1/2*a^2+a-12 = 0

DELTA = 1^2-(-12*1/2*4)

DELTA = 25

DELTA > 0

a = (25^(1/2)-1)/(1/2*2) or a = (-25^(1/2)-1)/(1/2*2)

a = 4 or a = -6

a in { -6, 4 }

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