find f(g(x)) when x=2 and f(x)= -x+4 and g(x) = -2x-3

Question

find f(g(x)) when x=2 and f(x)= -x+4 and g(x) = -2x-3

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Thanh Hà 4 years 2021-07-28T07:03:35+00:00 1 Answers 11 views 0

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    2021-07-28T07:04:40+00:00

    Answer:

                f(g(x)) = 11

    Step-by-step explanation:

    x=2  and  g(x) = -2x-3  ⇒ g(2) = -2(2)-3 = -4 – 3 = -7

    f(g(x)) and g(x) = -7  ⇒   f(g(x)) = f(-7)

    f(x)= -x+4  ⇒  f(-7) = -(-7) + 4 = 7 + 4 = 11

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