Question

Сократите дробь:
х³-1
------      =
х4+х²+1

Answer 1

$dfrac{x^3-1}{x^4+x^2+1} = dfrac{(x-1)(x^2+x+1)}{(x^2-x+1)(x^2+x+1)} = dfrac{x-1}{x^2-x+1}$