If f(x) = 2×2 + 1, what is f(x) when x = 3? 1 7 13 19

Question

If f(x) = 2×2 + 1, what is f(x) when x = 3? 1 7 13 19

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Helga 5 months 2021-08-09T05:23:51+00:00 2 Answers 9 views 0

Answers ( )

  1. mocmien2
    0
    2021-08-09T05:25:18+00:00
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    Answer:

    it is D

    Step-by-step explanation:

    2021 Edge

  2. dangkhoa
    0
    2021-08-09T05:25:47+00:00
    Reply

    Answer:

    d. 19

    Step-by-step explanation:

    f(x)=2x^2+1

    f(3)=2(3^2)+1

    f(3)=2(9)+1

    f(3)=18+1

    f(x)=19

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