Ответ:
(10х+25-х^2-10х-10)/10=0
(-х^2+15)/10=0
х^2=15
х=√15
и
х=-√15
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Ответ:
(10х+25-х^2-10х-10)/10=0
(-х^2+15)/10=0
х^2=15
х=√15
и
х=-√15