Advanced Math practice question

Answer: -4

x² = 25, and since x < 0, x = −5. So x + 1 = −4.

Common wrong answers

If you answered 6

6 uses x = 5, which is not negative.

If you answered -5

−5 is x, not x + 1.

If you answered -24

−24 comes from x = −25, forgetting the square root.

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