Номер 6!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Question

Номер 6!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Answer 1

X=1+y;подставим во второе:
у-1-у=1-2р^2;
1-2р^2+1=0;
-2р^2=-2;
р^2=1;
р=-1;р=1