rozwiąż nierówność kkkk: x⁴−x³−2x−4<0

prosze o pomoc:

Godzio: W(2) = 0 x³ + x² + 2x + 2 x⁴ − x³ − 2x − 4 : (x−2) −x⁴ +2x³ −−−−−−−−−−−−−− = x³ − 2x − 4 −x³ +2x² −−−−−−−−−−−−−−−−−−−−−−− = 2x² − 2x − 4 −2x² + 4x −−−−−−−−−−−−−−−−−−−−−−−− = 2x−4 −2x+4 −−−−−−−−−−−−−−−−−−−−−−−− = = (x−2)(x³ + x² + 2x + 2)<0 (x−2)(x²(x+1) + 2(x+1))<0 (x−2)(x+1)(x²+2)<0 x∊(−1,2)