Answer
$y=x^2-14x+46$
Work Step by Step
Use the vertex form:
$$y=a(x-h)^2+k$$
Substitute $(h,k)=(7,-3)$ and let $a=1$:
$$y=1(x-7)^2+(-3)$$
$$y=x^2-14x+49-3$$
$$y=x^2-14x+46$$
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