Розвяжите систему неровностей!. Created by Bodyavereshchak. algebra-ru

Розвяжите систему неровностей!...

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Розвяжите систему неровностей!

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$>(2+x)²+4x=132²+4х+х²+4х=134+4х+х²+4х-13=0х²+8х-9=0D=8²-4*1*(-9)=64+36=100=10²х1=((-8)+10)/2=1х2=((-8)-10)/2=-9у1=2+1=3у2=2+(-9)=-7Ответ: х1=1, у1=3 ;х2=-9, у2=-7 <div class=$

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