Question

Rozwiąż nierówność:

4x^3+3x^2-8x-6>0 (WIELOMIANY :))

Answer 1

4x^3+3x^2-8x-6>0

x^2(4x+3)-2(4x+3)>0

x^2-2>0                                                         U     ( 4x+3)^2>0  

x^2>2                                                                         16x^2+24x+9>0

x>pierw z 2   U x>- pierw z 2                                   delta=576-4*9*16=576-576=0

 xe(- niesk, -pierw z 2)u(pierw z 2, + niesk)       U              x=-24/32=-6/8=-3/4