algebra

[kongen123456777 offline]

hvordan regner man ut (1/a-1)-(1/a+1)

[Bananiel offline]

[tex]\frac{1}{a-1}-\frac{1}{a+1} = \frac{2}{(a+1)(a-1)}[/tex][tex]= \frac{2}{(a^2-1)}[/tex]


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