how do i find the minimum value or maximum value of function
x^2-12x+9?
Rewrite it in vertex form:
.
If the leading coefficient is positive, then the vertex (h, k) is the minimum point; if the leading coefficient is negative, then the vertex (h, k) is the maximum point.
So, we complete the square to rewrite the equation in vertex form:
The leading coefficient was positive (a = 1), so the point (6, -27) is the minimum of the parabola.
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