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If f(x)=x+2 and g(x)=x-3, then what is the product of the functions, (fg)(x), equal to?

Answer and explanation

Correct answer: \(x^2-x-6\)

For the product of two functions, (fg)(x)=f(x)g(x). Thus, (fg)(x)=(x+2)(x-3)=x^2-3x+2x-6=x^2-x-6, so option A is correct. In option B, the sign of the middle term is incorrect. Exam tip: Do not confuse (fg)(x), which denotes multiplication here, with composition f∘g(x).

Related tags

Relations-FunctionsAlgebra-Real-FunctionsProduct-Of-FunctionsPolynomial-ExpansionAlgebra Of Real FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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