Advanced Math practice question

Answer: 4

3x² = 48, so x² = 16 and x = 4.

Common wrong answers

If you answered 16

16 is x², not x.

If you answered 3.56

3.56 is √(38/3), subtracting 5 instead of adding.

If you answered 12.67

12.67 is 38/3, forgetting the square.

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