Question

Evaluate the function. f(x)=−x^2 −6x+12 Find f(4)

Answers

  1. 1. How to find f(4)?

    • I explained how to find f(5) in your previous question. It is exactly the same. We substitute x = 4 in the equation.

    2. Substitution and Evaluate

     \large{f(4) =  -  {(4)}^{2}  - 6(4) + 12}

    Follow BODMAS/PEMDAS rules as well! Exponent first.

     \large{ f(4) =  -  16 - 24 + 12} \\  \large{f(4) =  - 40 + 12} \\  \large{f(4) =  -2 8}

    3. Final Answer

    • f(4) = -28.

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