Advanced Math practice question

Answer: 7

x must lie strictly between −√10 and √10, that is, between about −3.16 and 3.16. The integers are −3 to 3, seven in all.

Common wrong answers

If you answered 3

3 counts only the positive integers.

If you answered 6

6 forgets zero.

If you answered 9

9 includes −4 and 4, whose squares are 16.

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