What is expand (x-20)/((x-4)(x+1)) ?

The solution to expand (x-20)/((x-4)(x+1)) is (x-20)/(x^2-3x-4)

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expand (x-20)/((x-4)(x+1))

expand

\frac{x - 20}{( x - 4 ) ( x + 1 )}

\frac{x - 20}{x ^{2} - 3 x - 4}

Solution steps

\frac{x - 20}{( x - 4 ) ( x + 1 )}

Expand

(x - 4) (x + 1) : x^{2} - 3 x - 4

= \frac{x - 20}{x ^{2} - 3 x - 4}

(x + 3 + 3)^{2}

\frac{( 1 + 3 ) ^{4}}{16} - 1 - 3

(e^{- x} cos (x) - e^{- x} sin (x))^{2}

\frac{1}{4} (x + 3) - 3

- (x + x \cdot y) d y

What is expand (x-20)/((x-4)(x+1)) ?
The solution to expand (x-20)/((x-4)(x+1)) is (x-20)/(x^2-3x-4)