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b in (-oo:+oo)
b*((3*b^7+2*b^6+36*b^5)/9) = 0
(b*(3*b^7+2*b^6+36*b^5))/9 = 0
3*b^7+2*b^6+36*b^5 = 0
b^5*(3*b^2+2*b+36) = 0
3*b^2+2*b+36 = 0
DELTA = 2^2-(3*4*36)
DELTA = -428
DELTA < 0
b^5 = 0
(b*b^5)/9 = 0
( b )
b = 0
( b^5 )
1*b^5 = 0 // : 1
b^5 = 0
b = 0
b in { 0, 0 }
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