What is expand [(1-x)(-e^{-x})]-1 ?

The solution to expand [(1-x)(-e^{-x})]-1 is -e^{-x}+e^{-x}x-1

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expand [(1-x)(-e^{-x})]-1

expand

[(1 - x) (- e^{- x})] - 1

- e^{- x} + e^{- x} x - 1

Solution steps

((1 - x) (- e^{- x})) - 1

Remove parentheses:

(a) = a

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

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

Expand

- e^{- x} (1 - x) : - e^{- x} + e^{- x} x

= - e^{- x} + e^{- x} x - 1

\frac{( 2 - x - y ) ^{3}}{3}

\frac{1}{( y - 1 ) ^{3}}

z (u, v, w (z, u, v)) (2 u + v - w (z, u, v) + 3 z (u, v, w (z, u, v)) = 0)

126 + 32

- \frac{4 ( - 2 x ^{2} + 5 )}{7 x - 9}

What is expand [(1-x)(-e^{-x})]-1 ?
The solution to expand [(1-x)(-e^{-x})]-1 is -e^{-x}+e^{-x}x-1