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x in (-oo:+oo)
a = h*((b^2)/2+b^1) // - h*((b^2)/2+b^1)
a-(h*((b^2)/2+b^1)) = 0
a-(h*((b^2)/2+b)) = 0
a-1*h*(1/2*b^2+b) = 0
a-1*h*(1/2*b^2+b) = 0
a-1/2*b^2*h-(b*h) = 0
a-1/2*b^2*h-(b*h) = 0
x belongs to the empty set
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