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If \(f(x)=x^2+2\), what is \(f(2)-f(1)\)?

Answer and explanation

Correct answer: 3

Step 1: Substitute the values into the function. \(f(2)=2^2+2=4+2=6\). Step 2: \(f(1)=1^2+2=1+2=3\). Difference: \(6-3=3\). Thus the correct answer is 3. A common wrong choice (4) occurs if someone mis-evaluates \(f(1)\) or forgets the +2 term. Exam tip: always compute each function value separately and then perform the subtraction to avoid sign or arithmetic mistakes.

Related tags

Quadratic FunctionFunction EvaluationDifferenceAlgebraEasyIntroduction To RelationsRelations And FunctionsMathematics

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