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15 August, 05:53

X2 + y2 - 4x + 10y + 4 = 0.

find the center and radius of a circle

Answers (1)
  1. R
    15 August, 09:45
    0
    the center is : (2, - 5) and radius 5

    Step-by-step explanation:

    hello:

    x² + y² - 4x + 10y + 4 = 0

    (x²-4x) + (y²+10y) + 4 = 0

    Completing The Square:

    (x²-4x+4) - 4 + (y²+10y+25) - 25+4 = 0

    (x-2) ² + (y+5) ² = 5² ... standard form

    the center is : (2, - 5) and radius 5
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