Evaluate. 2.2^3 . 2^-5 .2^-1 A. -4 B, -8 C. 1/4 D. 1/8

Question

Evaluate. 2.2^3 . 2^-5 .2^-1

A. -4
B, -8
C. 1/4
D. 1/8

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Trúc Chi 4 years 2021-08-27T19:32:15+00:00 1 Answers 9 views 0

Answers ( )

  1. danthu
    0
    2021-08-27T19:33:59+00:00
    Reply

    Answer:

    Step-by-step explanation:

    2^3 . 2^- 5 . 2^- 1

    = 2^( 3 – 5 – 1 )

    = 2^( 3 – 6 )

    = 2^- 3

    = 1 / 2^3

    = 1 / 8

    If

    2 . 2^3 . 2^- 5 . 2^- 1

    = 2^1 . 2^3 . 2^- 5 . 2^- 1

    = 2^( 3 – 5 – 1 + 1 )

    = 2^( 3 – 5 )

    = 2^- 2

    = 1 / 2^2

    = 1 / 4

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