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g in (-oo:+oo)
((3*(g-7))/2)*(g+10) = 0
(3*(g-7)*(g+10))/2 = 0
( g+10 )
g+10 = 0 // - 10
g = -10
( g-7 )
g-7 = 0 // + 7
g = 7
g in { -10, 7 }
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