Question

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

Answer 1

$\frac{4x*a^2}{a^4-1} = \frac{4x*a^2}{(a^2-1)(a^2+1)} = \frac{4x*a^2}{(a-1)(a+1)(a^2+1)}$