[tex]\frac{x*y}{x-y}[/tex] [tex]x=1[/tex] [tex]e[/tex] [tex]y=-1[/tex]
[tex]\frac{1*(-1)}{1-(-1)} = \frac{-1}{1+1} = \frac{-1}{2} = -\frac{1}{2}[/tex]
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[tex]\frac{x*y}{x-y}[/tex] [tex]x=1[/tex] [tex]e[/tex] [tex]y=-1[/tex]
[tex]\frac{1*(-1)}{1-(-1)} = \frac{-1}{1+1} = \frac{-1}{2} = -\frac{1}{2}[/tex]