If \(y=(x-5)^2+(x+1)^2-6,\) then \(y\) is least when \(x =\)

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C

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If \(y=(x-5)^2+(x+1)^2-6,\) then \(y\) is least when \(x =\)

A. -2
B. -1
C. 0
D. 2
E. None of the above

Answer: D

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