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Determine the following for the function f(x) = X^2 - 2x + 4 the vertex the y-intercept roots, including complex roots f(-1) f(1 + 2i)

Determine the following for the function f(x) = X^2 - 2x + 4

the vertex
the y-intercept
roots, including complex roots
f(-1)
f(1 + 2i)

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