Автор - olesechka2004

Решите уравнения:1)(x-1)^2=36
2)(y+5)^2=4
3)(x+7)^2=5
4)(y-1/9)^2=4/81

Ответ

Автор - Aerlan
2.y^2+10y+25=4
y^2+10y+21=0
100-84=16=4
x1=-3
x2=-7

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