Ответ:
(y+1)^2-4y(y+1)
y^2+1-4y^2-4y
5y^2+1-4y
5y^2-4y=-1
5y^2=-1
1
y= - ————
5y^2
-4y=-1
y= —— =0.25
4
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Ответ:
(y+1)^2-4y(y+1)
y^2+1-4y^2-4y
5y^2+1-4y
5y^2-4y=-1
5y^2=-1
1
y= - ————
5y^2
-4y=-1
1
y= —— =0.25
4