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     EduGorilla 
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    A circle has its equation x2 + y2 + 2x + 4y + 1 = 0. Choose the correct coordinates of its centre and the right value of its radius from the following.

    Options :-

    1. Centre (– 1, – 2), Radius = 2
    2. Centre (2, 1), Radius = 3
    3. Centre (1, 2), Radius = 3
    4. Centre = (– 1, 2), Radius = 2
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Reply To: A circle has its equation x2 + y2 + 2x + 4y + 1 = 0. Choose the correct coordinates of its centre an….
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