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If \(f(x)=x^2+6x+9\) and \(g(x)=x+3\), what is the value of \(\left(\frac{f}{g}\right)(0)\)? Here, \(x\ne -3\).

Answer and explanation

Correct answer: 3

The quotient function is \(\left(\frac{f}{g}\right)(x)=\frac{x^2+6x+9}{x+3}=\frac{(x+3)^2}{x+3}=x+3\), where \(x\ne -3\). Hence, at \(x=0\), its value is \(0+3=3\). The value 9 is only \(f(0)\), not the quotient. Exam tip: simplify the quotient carefully and exclude values that make the denominator zero.

Related tags

Relations And FunctionsQuotient Of FunctionsAlgebra Of Real FunctionsFunction EvaluationDomain RestrictionsMathematicsClass 11 Mcq

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