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[tex] \frac{4x* a^{2} }{a^{4}-1 } [/tex]= ?
Un raspuns urgent, va rog!




Răspuns :

[tex] \frac{4x*a^2}{a^4-1} = \frac{4x*a^2}{(a^2-1)(a^2+1)} = \frac{4x*a^2}{(a-1)(a+1)(a^2+1)} [/tex]