Advanced Math practice question

Answer: 4

n² − n = 12 gives n² − n − 12 = (n − 4)(n + 3) = 0, so n = 4.

Common wrong answers

If you answered 3

3 gives 9 − 3 = 6.

If you answered 6

6 gives 36 − 6 = 30.

If you answered -3

−3 also satisfies the equation but is not positive.

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