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