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b in (-oo:+oo)
b^2+(4/2)*b^2+4*b+3*b-2 = 0
3*b^2+7*b-2 = 0
DELTA = 7^2-(-2*3*4)
DELTA = 73
DELTA > 0
b = (73^(1/2)-7)/(2*3) or b = (-73^(1/2)-7)/(2*3)
b = (73^(1/2)-7)/6 or b = (-(73^(1/2)+7))/6
b in { (-(73^(1/2)+7))/6, (73^(1/2)-7)/6 }
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