Advanced MathEasy–MediumValue of a quadratic function at 2
Advanced Math practice question
The function w is defined by w(x) = 5x² − 3. What is the value of w(2)?
Answer: 17
5(4) − 3 = 17.
Common wrong answers
- If you answered 7
- 7 uses 5(2) − 3.
- If you answered 23
- 23 adds 3.
- If you answered 97
- 97 uses (5 × 2)² − 3.
More Advanced Math questions
- Easy–Medium
If f(x) = 2x² − 3, what is f(4)? - Easy–Medium
Which expression is equivalent to (2x³)(3x⁴)? - Easy–Medium
What are the solutions to x² − 16 = 0? - Easy–Medium
Which expression is equivalent to (x + 5)²? - Easy–Medium
For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
What are the solutions to the equation 2(x − 3)² − 32 = 0 ?
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