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x in (-oo:+oo)
(8*x+2/3)*(6*x+3/2) = 0
( 6*x+3/2 )
6*x+3/2 = 0 // - 3/2
6*x = -3/2 // : 6
x = -3/2/6
x = -1/4
( 8*x+2/3 )
8*x+2/3 = 0 // - 2/3
8*x = -2/3 // : 8
x = -2/3/8
x = -1/12
x in { -1/4, -1/12 }
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