Ответы на вопрос:
Х^2-8х+7=0, d=(8)^2-4*7=64-28=36, корень из дискриминанта =6 х1=(8-6)/2= 2/2= 1 х2=(8+6)=14/2=7 ответ: х1= 1 х2= 7
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