(х+5)(х+3)(х-2)(х-4)=-48 (х+5)(х-4)=х^2+x-20=t (х+3)(х-2)=х^2+x-6=t+14 (х+5)(х+3)(х-2)(х-4)=t*(t+14)=-48 t*(t+14)=-48 t=-6 или t=-8 х^2+x-20=-6 или х^2+x-20=-8 х^2+x-14=0 или х^2+x-12=0 **************** x1=(-1-корень(57))/2 x2=(-1+корень(57))/2 x3=-4 x4=3
