Let f(x) = 3x - 6 and g(x)= -2x + 5. Which of the following is f(x) - g(x)?

Discussion in 'Calculator Requests' started by math_celebrity, Sep 9, 2020.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    Let f(x) = 3x - 6 and g(x)= -2x + 5. Which of the following is f(x) - g(x)?

    f(x) - g(x) = 3x - 6 - (-2x + 5)

    Distribute the negative sign where double negative equals a plus:
    f(x) - g(x) = 3x - 6 + 2x - 5

    Combine like terms:
    f(x) - g(x) = (3 + 2)x - 6 - 5
    f(x) - g(x) = 5x - 11
     
    math_celebrity, Sep 9, 2020
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