What is expand (1-x^2)/((1+x^2)^2) ?

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

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expand (1-x^2)/((1+x^2)^2)

expand

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

\frac{1 - x ^{2}}{1 + 2 x ^{2} + x ^{4}}

Solution steps

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

(1 + x^{2})^{2} = 1 + 2 x^{2} + x^{4}

= \frac{1 - x ^{2}}{1 + 2 x ^{2} + x ^{4}}

(3 - i)^{5}

(a - b) (a + b)

\frac{1}{x ( x - 1 )}

(x + 5) (x - 5)

\frac{d}{d r ( T )} ((E (T, b)) (10 - 10 T \cdot b^{- 0.14 r (T)}))

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