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7 September, 13:06

What is the value of x in the equation below?

1+2e^x+1=9

a). x=log4-1

b) x=log4

c). x=Ln4-1

d). x=ln4

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Answers (1)
  1. 7 September, 13:31
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    Answer: C

    Step-by-step explanation:

    1+2e^x+1=9

    2e^x+1=9-1

    e^x+1 = 8/2

    e^x+1 = 4

    Here we can applicate the Ln:

    ln e^x+1 = ln 4

    Applicating the log property for exponent:

    (x+1). ln e = ln 4

    Ln e = 1, so:

    x+1 = ln 4

    x = ln 4-1
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