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21 November, 14:05

Solve each question for x.

xe^-x+7e^-x=0

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Answers (1)
  1. 21 November, 17:58
    0
    x=-7

    Step-by-step explanation:

    xe^-x+7e^-x=0

    factor out the e^-x

    e^-x (x+7) = 0

    e^-x=0, x+7=0

    -x=ln (0), x=0-7=-7,

    since ln (0) is undefined,

    the only solution is - 7.
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