Write the equation of the circle in standard form with the center (4,-2) and radius 5.

Question

Write the equation of the circle in standard form with the center (4,-2) and radius 5.

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Thanh Thu 3 years 2021-08-18T15:48:40+00:00 1 Answers 6 views 0

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    2021-08-18T15:50:05+00:00

    Standard formula for circle:

    (x-h)^2+(y-k)^2=r^2

    h: 4
    k:-2
    r:5

    Since the radius is squared, it would be 5^2=25

    Now plug in:

    (x-4)^2+(y+2)^2 =25

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )