Question

Find the coordinates of the vertex of the following parabola algebraically. Write your answer as an (x , y) point


`y = - {x}^(2) + 8x - 23`
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Answer 1

(4,-7)

Do it by making factors of x by using middle term splitting method. You can learn about this method by watching you tube video . Then find out the y.

Answer 2

The vertex to y=x^2+8x-23 is (4,-7)