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28.08.2019 •
Mathematics
The axis of symmetry for the function f(x) = −x2 − 10x 16 is x = −5. what are the coordinates of the vertex of the graph? (−5, 41) (−5, 56) (−5, 76) (−5, 91)
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Ответ:
we have
Convert the function into vertex form
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
the vertex is the point![(-5,41)](/tpl/images/0204/4323/808dd.png)
the axis of symmetry must coincide with the x-coordinate of the vertex
so
therefore
the answer is the option
Ответ: