Advanced Math practice question

Answer: 5

2³ = 8 gives a = 3, and 2⁻² = 1/4 gives b = −2. Then a − b = 5.

Common wrong answers

If you answered 1

1 uses b = 2 with the wrong sign.

If you answered 3

3 is a alone.

If you answered -5

−5 is b − a.

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