Problem

Determine the vertex of the parabola without graphing.
\[
f(x)=3 x^{2}-18 x+25
\]
What is the vertex of the parabola?
(Type an ordered pair.)

Answer

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Answer

The vertex of the parabola is \(\boxed{(3, -2)}\).

Steps

Step 1 :The vertex of a parabola given in the form \(f(x) = ax^2 + bx + c\) is at the point \((-b/2a, f(-b/2a))\). In this case, \(a = 3\), \(b = -18\), and \(c = 25\).

Step 2 :So, the x-coordinate of the vertex is \(-(-18)/(2*3) = 3\).

Step 3 :We can substitute \(x = 3\) into the equation to find the y-coordinate of the vertex.

Step 4 :The vertex of the parabola is \(\boxed{(3, -2)}\).

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