Advanced MathHardDifference between a value and the minimum
Advanced Math practice question
The function g is defined by g(x) = 2(x − 2)² − 5. By how much does g(5) exceed the minimum value of g?
Answer: 18
The minimum is −5 at x = 2, and g(5) = 13, so the difference is 18.
Common wrong answers
- If you answered 8
- 8 subtracts 5 from 13 without minding the sign.
- If you answered 13
- 13 is g(5) alone.
- If you answered -5
- −5 is the minimum alone.
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