Pilne na jutro!! Zapisz w jak najprostrzej postaci:  a. abc-(abc-(-xyz-(xyz-abc))) b. s2t -(st2-(s2t-(st2-s2t))) c. x2yz - (xy2z-(xyz2-(x2yz-xy2z))) Daję najjjjj!!!

a. abc-(abc-(-xyz-(xyz-abc))) = abc-(abc-(-xyz-xyz+abc))=abc-(abc+xyz+xyz-abc)=abc+abc-xyz-xyz+abc=3abc-2xyz b. s2t -(st2-(s2t-(st2-s2t)))=s2t-(st2-(s2t-st2+s2t))=s2t-(st2-s2t+st2-s2t)= s2t-st2+s2t-st2+s2t = 3s2t - 2st2 c. x2yz - (xy2z-(xyz2-(x2yz-xy2z))) = x2yz-(xy2z-(xyz2-x2yz+xy2z))= x2yz-(xy2z-xyz2+x2yz-xy2z)= x2yz -xy2z+xyz2-x2yz+xy2z = xyz2