Advanced Math practice question

Answer: 5

2v² − 8 = 42 gives 2v² = 50, v² = 25, v = 5.

Common wrong answers

If you answered 17

17 is 34/2, forgetting the square root.

If you answered 25

25 is v², not v.

If you answered 4.1

4.1 is √17, subtracting 8 instead of adding.

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