SOLUTION: How do you simplify -e^(-2x)-e^(-x)? Please show steps, thank you for helping

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Question 1134817: How do you simplify -e^(-2x)-e^(-x)? Please show steps, thank you for helping
Found 2 solutions by mathsolverplus, Alan3354:
Answer by mathsolverplus(88) About Me  (Show Source):
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How do you simplify -e^(-2x)-e^(-x)?
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"Simplified" can be a matter of opinion.
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-e^(-2x)-e^(-x)
= -1%2A%28e%5E%28-2x%29+%2B+e%5E%28-x%29%29
= -1%2Ae%5E%28-x%29%2A%28e%5E%28-x%29+%2B+1%29
= -1%2Ae%5E%28-2x%29%2A%28e%5E%28x%29+%2B+1%29
= -%28e%5E%28x%29+%2B+1%29%2F%28e%5E%282x%29%29%29
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You pick it.