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mihailovamishana
@mihailovamishana
July 2022
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Решите уравнение:
а)х²+2х-3=-3
б)х²+2х-3=-4
(15 баллов)
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2407Alexa
Б) х²+2х-3=-4х²+2х-3+4=0х²+2х+1=0(х+1)²=0х+1=0х=-1(-1)²+2*(-1)-3=-41-2-3=-41-5=-4-4=-4 истина.а вот прндидущий б)решил не верно.
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