Какое из уравнений задает окружность с центром в точке А (-7; 1) и радиусом R = 4?
1) (х+7)2+(у−1)2=4
2) (х−7)2+(у+1)2=4
3) (х−7)2+(у−1)2=16
4) (х+7)2+(у−1)2=16
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