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x in (-oo:+oo)
6 = (1*x)/2-(1/4) // - (1*x)/2-(1/4)
1/4-((1*x)/2)+6 = 0
1/4-(x/2)+6 = 0
25/4-1/2*x = 0 // - 25/4
-1/2*x = -25/4 // : -1/2
x = -25/4/(-1/2)
x = 25/2
x = 25/2
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