Advanced Math practice question

Answer: 1

A square is zero only when what is squared is zero: x − 1 = 0, so x = 1.

Common wrong answers

If you answered 0

0 gives (−1)² = 1.

If you answered 2

2 gives 1² = 1.

If you answered -1

−1 gives (−2)² = 4.

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