Raymond B. answered • 10/01/22
Tutor
5
(2)
Math, microeconomics or criminal justice
f(x)=x^2-4x+15
add & subtract 4
=x^-4x+4 -4 +15
= x^2-4x +4 +11
= (x-2)^2 +11
vertex=minimum = (2, 11)
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