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

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

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

expand

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

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

Solution steps

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

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

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

(x e^{a x}) (e^{b x} + b e^{b x} x)

\frac{t ( t - 2 )}{( 1 + t ) ( 1 - t )}

\frac{5 x}{( 2 - x ) ( x + 4 )}

A (- 8, 3) y B (- 2, - 5)

(2 x + 1)^{3} \cdot e^{5 x}

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