What is expand-(6x)/((x^2+9)^2) ?

The solution to expand-(6x)/((x^2+9)^2) is -(6x)/(x^4+18x^2+81)

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expand-(6x)/((x^2+9)^2)

expand

- \frac{6 x}{( x ^{2} + 9 ) ^{2}}

- \frac{6 x}{x ^{4} + 18 x ^{2} + 81}

Solution steps

- \frac{6 x}{( x ^{2} + 9 ) ^{2}}

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

= - \frac{6 x}{x ^{4} + 18 x ^{2} + 81}

\frac{2 - x}{( x + 4 ) ( x - 4 )}

6 (x + Δ x)^{2} - 8 (x + Δ x)

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

- \frac{269 e - 178}{192 ( e - 2 )}

(m^{2} - n - 8) - (3 m^{2} + 6 n - 2,)

What is expand-(6x)/((x^2+9)^2) ?
The solution to expand-(6x)/((x^2+9)^2) is -(6x)/(x^4+18x^2+81)