If f(x) = -x2 – 1, and g(x) = x + 5, then g(f(x)) = [ ? ]x2+[ ]x+[]

Question

If f(x) = -x2 – 1, and
g(x) = x + 5, then
g(f(x)) = [ ? ]x2+[ ]x+[]

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Helga 3 years 2021-07-16T01:06:50+00:00 1 Answers 9 views 0

Answers ( )

  1. Edana
    0
    2021-07-16T01:08:18+00:00
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    Answer:

    -x^2 +4

    Step-by-step explanation:

    f(x) = -x^2 – 1, and

    g(x) = x + 5,

    g(f(x)) = Plug f(x) in for x in g(x)

              =-x^2-1 +5

              =-x^2 +4

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