If $y = (x – 5)^2 + (x + 1)^2 – 6,$ then y is least when $x =$ - The Beat The GMAT Forum

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

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Sun May 09, 2021 2:32 pm

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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

Source: Official Answer

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Source: Beat The GMAT — Problem Solving | Sun May 09, 2021 2:32 pm

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