What is (e^{-x})(e^{-x}-e^{-x}x) ?

The solution to (e^{-x})(e^{-x}-e^{-x}x) is (-x+1)/(e^{2x)}

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simplify (e^{-x})(e^{-x}-e^{-x}x)

simplify

(e^{- x}) (e^{- x} - e^{- x} x)

\frac{- x + 1}{e ^{2 x}}

Solution steps

(e^{- x}) (e^{- x} - e^{- x} x)

Apply exponent rule:

a^{- b} = \frac{1}{a ^{b}}

= \frac{1}{e ^{x}} (- e^{- x} x + e^{- x})

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot ( e ^{- x} - e ^{- x} x )}{e ^{x}}

1 \cdot (e^{- x} - e^{- x} x) = e^{- x} - e^{- x} x

= \frac{e ^{- x} - e ^{- x} x}{e ^{x}}

Factor out common term

e^{- x}

= \frac{e ^{- x} ( 1 - x )}{e ^{x}}

Cancel

\frac{e ^{- x} ( 1 - x )}{e ^{x}} : \frac{1 - x}{e ^{2 x}}

= \frac{1 - x}{e ^{2 x}}

= \frac{- x + 1}{e ^{2 x}}

(\frac{1.96}{0.03})^{2} \cdot 0.5 \cdot 0.5

1.99 (\frac{x \cdot 3 \cdot 1 0 ^{8}}{1.6 \cdot 1 0 ^{- 19}}) \cdot 62 3^{- 1}

12500 \cdot 8.85 \cdot 1 0^{- 12}

(2^{5})^{3} \cdot (\frac{( 5 ^{3} ) ^{4}}{2 ^{3}})

45

What is (e^{-x})(e^{-x}-e^{-x}x) ?
The solution to (e^{-x})(e^{-x}-e^{-x}x) is (-x+1)/(e^{2x)}