Ответ:
1. 2х^2-5=0
2х^2=5
х^2=2.5
х=√2.5
2. х-х^3=0
х(1-х^2)=0
х1=0
1-х^2=0
-х^2=-1
х^2=1
х2=1
х3=-1
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Ответ:
1. 2х^2-5=0
2х^2=5
х^2=2.5
х=√2.5
2. х-х^3=0
х(1-х^2)=0
х1=0
1-х^2=0
-х^2=-1
х^2=1
х2=1
х3=-1