Advanced Math practice question

Answer: 2

(x + 1/x)² = x² + 2(x)(1/x) + 1/x² = x² + 2 + 1/x². The constant term is 2.

Common wrong answers

If you answered 0

0 assumes the middle term vanishes.

If you answered 1

1 counts the cross term once.

If you answered 4

4 doubles the constant.

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