Advanced MathEasyEvaluating a scaled square
Advanced Math practice question
The function q is defined by q(x) = 3x². What is the value of q(2)?
Answer: 12
q(2) = 3 × 2² = 3 × 4 = 12.
Common wrong answers
- If you answered 6
- 6 is 3 × 2, forgetting to square.
- If you answered 9
- 9 is 3², squaring the coefficient instead of x.
- If you answered 36
- 36 is (3 × 2)², squaring the 3 as well; only x is squared.
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