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29 July, 20:17

What is the solution to the equation below?

log 20 х3 - 2logx = 4

x=25

x=50

x=250

x=500

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Answers (1)
  1. 29 July, 20:31
    0
    x = 500.

    Step-by-step explanation:

    log20x^3 - 2logx = 4

    By the laws of logs:

    log20x^3 - logx^2 = 4

    log (20x^3 / x^2) = 4

    20x^3 / x^2 = 10^4

    20x = 10,000

    x = 10,000 / 20

    x = 500.
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