What is expand (-x^2-9)/((x^2-9)^2) ?

The solution to expand (-x^2-9)/((x^2-9)^2) is (-x^2-9)/(x^4-18x^2+81)

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expand (-x^2-9)/((x^2-9)^2)

expand

\frac{- x ^{2} - 9}{( x ^{2} - 9 ) ^{2}}

\frac{- x ^{2} - 9}{x ^{4} - 18 x ^{2} + 81}

Solution steps

\frac{- x ^{2} - 9}{( x ^{2} - 9 ) ^{2}}

(x^{2} - 9)^{2} = x^{4} - 18 x^{2} + 81

= \frac{- x ^{2} - 9}{x ^{4} - 18 x ^{2} + 81}

ln (x^{2} (x + 2))

(2 x - 5) (2 x + 5)

\frac{2}{( s ^{2} - 2 s + 2 ) ^{2}}

\frac{x ( x + 1 ) ( 2 x + 1 )}{6}

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

What is expand (-x^2-9)/((x^2-9)^2) ?
The solution to expand (-x^2-9)/((x^2-9)^2) is (-x^2-9)/(x^4-18x^2+81)