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19-11-2020
Mathematics

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Finding the Vertex What is the vertex of the quadratic function f(x) = (x – 8)(x – 2)? (,)

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unicorn3125 unicorn3125

19-11-2020

Answer:

vertex = (h, k) = (5, -9)

Step-by-step explanation:

[tex]f(x) = (x-8)(x-2)\quad\implies\quad x_1=8\,,\ \ x_2=2\\\\ h=\dfrac{x_1+x_2}2=\dfrac{8+2}2=5\\\\k=f(h)=(5-8)(5-2)=-3\cdot3=-9[/tex]

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