Which statement describes the graph of f(x) = 4×2 + 20x + 25? The graph does not intersect the x-axis. The graph touches t

Question

Which statement describes the graph of f(x) = 4×2 + 20x + 25?

The graph does not intersect the x-axis.
The graph touches the x-axis at (–2.5, 0).
The graph intersects the x-axis at (–0.4, 0) and (0.4, 0).
The graph intersects the x-axis at (2, 0) and (5, 0).

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Dulcie 3 years 2021-09-05T14:02:15+00:00 2 Answers 105 views 0

Answers ( )

  1. Maris
    0
    2021-09-05T14:03:21+00:00
    Reply

    Mark brainlest please

    Answer

    The graph intersects the x-axis at (2, 0) and (5, 0).

  2. trungdung22
    0
    2021-09-05T14:03:29+00:00
    Reply

    The graph of the quadratic function

    does not intersect the x-axis, when

    touches the x-axis at one point, when

    intersects x-axis at two points, when

    For the function  the discriminant D is

    This means that the graph of the function touches the x-axis at one point.

    Since  then the tangent point has x-coordinate  (value at which y=0).

    ( The graph touches the axis at (-2.5,0).)

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