I AM GOING TO SCREAM!! I HAVE LITERALLY DRAINED MY POINTS FOR SOMEONE TO ANSWER THIS QUESTION – answer both a and b plz, brainliest goes to

Question

I AM GOING TO SCREAM!! I HAVE LITERALLY DRAINED MY POINTS FOR SOMEONE TO ANSWER THIS QUESTION – answer both a and b plz, brainliest goes to the person with the right and most helpful answer.

QUESTION:
For all values of x,
f(x) = x^{2}+3 || g(x)=2x-1

a) Find fg(2)
b) Find gf(2)

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Thu Hương 3 years 2021-08-18T06:28:47+00:00 1 Answers 0 views 0

Answers ( )

  1. mit
    0
    2021-08-18T06:30:38+00:00
    Reply

    Answer:

    a) 12

    b) 13

    Step-by-step explanation:

    f(x) = x^2 + 3

    g(x) = 2x – 1

    a) f(g(2)) = ?

    g(2) = 2(2) – 1

    = 4 – 1

    = 3

    f(g(2)) = f(3) = 3^2 + 3

    = 9 + 3

    = 12

    b) g(f(2)) = ?

    f(2) = 2^2 + 3

    = 4 + 3

    = 7

    g(f(2)) = g(7) = 2(7) – 1

    = 14 – 1

    = 13

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