What the focus of the parabola given by the equation y=x^2-2x-3

Subtract
x
2
x
2
from both sides of the equation.
y
−
x
2
=
−
2
x
−
3
y
-
x
2
=
-
2
x
-
3
Add
2
x
2
x
to both sides of the equation.
y
−
x
2
+
2
x
=
−
3
y
-
x
2
+
2
x
=
-
3
Add
3
3
to both sides of the equation.
y
−
x
2
+
2
x
+
3
=
0
y
-
x
2
+
2
x
+
3
=
0

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answer:
congruent segments
step-by-step explanation:
congruent segments. take a line, cut it in half, superipose one half over the other half; you'll have congruence.