Question

$\frac{ {x}^{4} - 1}{ {x}^{2}+ 1 }$
simplificat prin x^2+1​​

Answer 1

x^4-1= (x^2-1)(x^2+1)

deci fractia (x^4-1)\(x^2+1) sinplificat cu x^2+1 = (x^2-1)/1= x^2-1