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If \(f(x)=x^2+2\) and \(g(x)=3x-1\), what is the value of \((f+g)(2)\)?

Answer and explanation

Correct answer: 11

For the sum of two functions, \((f+g)(x)=f(x)+g(x)\). Thus, \(f(2)=2^2+2=6\) and \(g(2)=3(2)-1=5\). Therefore, \((f+g)(2)=6+5=11\), so option C is correct. In an exam, calculate the values of the two functions separately before adding them to avoid substitution errors.

Related tags

AlgebraReal FunctionsFunction AdditionEvaluation Of FunctionsAlgebra Of Real FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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