The function f is defined by f(x)=2x+5/x+4 find f (3x)

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The function f is defined by f(x)=2x+5/x+4 find f (3x)

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Thu Nguyệt 2 months 2021-08-01T17:25:31+00:00 1 Answers 2 views 0

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    2021-08-01T17:26:45+00:00

    Answer:

    \displaystyle f(3x) = \frac{6x + 5}{3x + 4}

    General Formulas and Concepts:

    Algebra I

    • Functions
    • Function Notation

    Step-by-step explanation:

    Step 1: Define

    Identify

    \displaystyle f(x) = \frac{2x + 5}{x + 4}

    Step 2: Find

    1. Substitute in x [Function f(x)]:                                                                              \displaystyle f(3x) = \frac{2(3x) + 5}{3x + 4}
    2. Simplify:                                                                                                             \displaystyle f(3x) = \frac{6x + 5}{3x + 4}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )