mthielepape03 mthielepape03

09-02-2020
Mathematics

contestada

Solve each question for x.
xe^-x+7e^-x=0

Respuesta :

Yang100 Yang100

09-02-2020

Answer:

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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