Which expression is equal to 5(2×2 – 1) + 3(7×2 + 1)?

Question

Which expression is equal to
5(2×2 – 1) + 3(7×2 + 1)?

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Eirian 3 years 2021-07-24T04:50:08+00:00 2 Answers 20 views 0

Answers ( )

  1. taiduc
    0
    2021-07-24T04:51:08+00:00
    Reply

    Answer:

    31 {x}^{2} - 2

    Step-by-step explanation:

    10 {x}^{2} - 5 + 21{x}^{2} + 3 \\ 31 {x}^{2} -2

  2. diemthu
    0
    2021-07-24T04:51:19+00:00
    Reply

    Answer:

    its d

    Step-by-step explanation:

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