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nataxa71
@nataxa71
July 2022
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решите уравнение x^2-x-1
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Checov7400
D=1+4=5
х1=(1-√5)/2
х2=(1+√5)/2
0 votes
Thanks 1
Diyorochka7919
Х^2-х-1=0
а=1; в=-1; с=-1
д=в^2-4ас
Д=1+4=5
х1,2=(-в+/-√Д)\2а
х1,2=(1+\-√5)\2
х1=(1-√5)\2
х2=(1+√5)\2
2 votes
Thanks 1
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Answers & Comments
х1=(1-√5)/2
х2=(1+√5)/2
а=1; в=-1; с=-1
д=в^2-4ас
Д=1+4=5
х1,2=(-в+/-√Д)\2а
х1,2=(1+\-√5)\2
х1=(1-√5)\2
х2=(1+√5)\2