What is expand ((x-12)(x+13))/(x^2-1) ?

The solution to expand ((x-12)(x+13))/(x^2-1) is (x^2+x-156)/(x^2-1)

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expand ((x-12)(x+13))/(x^2-1)

expand

\frac{( x - 12 ) ( x + 13 )}{x ^{2} - 1}

\frac{x ^{2} + x - 156}{x ^{2} - 1}

Solution steps

\frac{( x - 12 ) ( x + 13 )}{x ^{2} - 1}

Expand

(x - 12) (x + 13) : x^{2} + x - 156

= \frac{x ^{2} + x - 156}{x ^{2} - 1}

\frac{( 4 y + x ) ^{3}}{8}

e^{x} (x + i y) (cos (y) + i sin (y))

(1 - y e^{x y}) \cdot (e^{- x y} + x)

\frac{5 e ^{- x}}{x ( x + 1 )}

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

What is expand ((x-12)(x+13))/(x^2-1) ?
The solution to expand ((x-12)(x+13))/(x^2-1) is (x^2+x-156)/(x^2-1)