Решите неравенство x3+x2-x-1<0
X³+x²-x-1<0<br>(x³+x²)-(x+1)<0<br>x²(x+1)-(x+1)<0<br>(x+1)(x²-1)<0<br>(x+1)(x+1)(x-1)<0<br>(x+1)²(x-1)<0<br> - - + _________ -1 ___________ 1____________ x∈(-∞;-1)U(-1;1)