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

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

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

expand

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

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

Solution steps

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

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

Expand

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

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

\frac{( x ^{2} + 2 x + 2 )}{( x ^{3} \cdot ( x ^{2} - 1 ) )}

\frac{( x - 1 ) ( 2 x - 5 )}{( x + 3 )}

\frac{( 3 s ^{2} + 4 )}{s ( s ^{2} + 4 )}

121 \cdot 18 - 121 \cdot 8

\frac{1}{( 4 x - 1 ) ^{5}}

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