What is expand-(4x^3)/((x^2+4)^2) ?

The solution to expand-(4x^3)/((x^2+4)^2) is -(4x^3)/(x^4+8x^2+16)

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expand-(4x^3)/((x^2+4)^2)

expand

- \frac{4 x ^{3}}{( x ^{2} + 4 ) ^{2}}

- \frac{4 x ^{3}}{x ^{4} + 8 x ^{2} + 16}

Solution steps

- \frac{4 x ^{3}}{( x ^{2} + 4 ) ^{2}}

(x^{2} + 4)^{2} = x^{4} + 8 x^{2} + 16

= - \frac{4 x ^{3}}{x ^{4} + 8 x ^{2} + 16}

\frac{3 x + 5}{3 ( 3 x + 9 )}

\frac{1 + cosh ( x ) sinh ( x ) + ( sinh ( x ) ) ^{2}}{e ^{x}}

- \frac{d}{d x} (150 (120 - x)^{2})

\frac{d ^{2}}{d x ^{2}} ((y) (x - 2))

\frac{3 x + 1}{x ^{2} - 9} - \frac{2}{x + 3}

What is expand-(4x^3)/((x^2+4)^2) ?
The solution to expand-(4x^3)/((x^2+4)^2) is -(4x^3)/(x^4+8x^2+16)