Advanced Math practice question

Answer: 1

Only x = 0 squares to 0, so there is exactly one solution.

Common wrong answers

If you answered 0

0 is the solution itself, not the count.

If you answered 2

2 would be right for x² = 9 (x = ±3), but 0 has only one square root.

If you answered 4

4 has no basis; a quadratic has at most two real solutions.

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