If g(x) = x2 – 4, find g(5). 6 О 14 21 O 29

Question

If g(x) = x2 – 4, find g(5).
6
О
14
21
O
29

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Lệ Thu 4 years 2021-07-19T14:38:07+00:00 2 Answers 3 views 0

Answers ( )

  1. Maris
    0
    2021-07-19T14:39:48+00:00
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    \boxed{ \sf{Answer}}

    \sf \: g(x) = {x}^{2} - 4 \\ \\ \sf \: x = 5 \\ \\ \sf \: g(5) = {5}^{2} - 4 \\ \sf \: g(5) = 25 - 4 \\ \sf \: g(5) =\underline 2\underline1

    Answer ↦21 [Option C]

  2. RobertKer
    0
    2021-07-19T14:39:52+00:00
    Reply

    \tt \: g(x) = {x}^{2} - 4

    Substitute the value of x as 5 (given) in the above equation. The equation changes too..

    \tt \: g(5) = {5}^{2} - 4

    Now you can easily solve the equation.

    \tt \: g(5) = {5}^{2} - 4 \\\tt g(5) =( 5 \times 5) - 4 \\ \tt \: g(5) = 25 - 4 \\ \tt \: g(5) = 21

    Answer – \boxed{\sf{21}}

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