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Доказать неравенство (а-2)^2-а(а-4)больше0

Ответ:

kat09062004

12.07.2020 18:23

(а-2)^2-а(а-4)>0
а^2+4-а^2-a^2+4a=0
4a+4=0
4a=4
a=4:4
a=1

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