Complete the square to re-write the quadratic function in vertex form: y = x ^ 2 – 2x – 8

Question

Complete the square to re-write the quadratic function in vertex form: y = x ^ 2 – 2x – 8

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Bình An 5 months 2021-08-27T12:21:37+00:00 2 Answers 2 views 0

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    0
    2021-08-27T12:23:24+00:00

    Answer:

    y=(x-1)^2-9

    Step-by-step explanation:

    y=x^2-2x-8

    To complete the square:

    \frac{b}{2}=(-1)^2=1

    y=x^2-2x-8

    +9                 +9

    y+9=x^2-2x+1

    (x-1)^2=y+9

              -9         -9

    y=(x-1)^2-9

    0
    2021-08-27T12:23:31+00:00

    Answer:

    (1,-9)

    Step-by-step explanation:

    Rewrite in vertex form and use this form to find the vertex

    (h,k).

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