Zapisz w jak najprostszej postaci: A.abc-(abc-(-xyz-(xyz-abc))) B. s^-t-(st^-(s^t-(st^-s^t))) C. x^yz-(xy^z-(xyz^-(x^yz-xy^z))) ^ to jest DO KWADRATU

a) abc - (abc - (- xyz - (xyz - abc )))= abc-(abc-(-xyz-xyz+abc))=abc-2xyz b)s²t - (st² - (s²t - (st² - s²t)))= s^t-(st^-(s^t-st^+s^t))=s^t-(st^-2s^t+st^)= =s^t-2st^+2s^t=3s^t-2st^ c)x²yz - (xy²z - (xyz² - ( x²yz - xy²z))) = x^yz-(xy^z-(xyz^-x^yz-xy^z))= =x^yz-(xy^z-xyz^+x^yz+xy^z)=x^yz-xy^z+xyz^-x^yz-xy^z=xyz^-2xy^z