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x in (-oo:+oo)
1/4 = -8*x // + -8*x
1/4-(-8*x) = 0
8*x+1/4 = 0
8*x+1/4 = 0 // - 1/4
8*x = -1/4 // : 8
x = -1/4/8
x = -1/32
x = -1/32
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