Корень минус три икс плюс 3 равно икс минус 1
Вазген228
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12.07.2019 03:20
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2
-3х=3=х²-1
-х²-3х+4=0 (*(-1))
х²+3х-4=0
D=9+16=25
х1=(-3+5):2= 1
х2=(-3-5):2=-4