Advanced Math practice question

Answer: A. 2

x² is never less than 0, so y is never less than 2, and y = 2 when x = 0.

Why the other answers are wrong

B. 0

0 is the minimum of x², not of x² + 2.

C. −2

−2 has the sign wrong.

D. 1

1 is not reached: y is at least 2.

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