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OpenStudy (anonymous):
What is the vertex for the graph of y = −2x2 + 8x − 13? (2, 11) (2, −5) (−2, −37) (−2, −21)
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OpenStudy (anonymous):
find the derivative and set it to zero. Solve for x. Then plug x into the original equation in order to find the y
OpenStudy (anonymous):
(2, −5)
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