What is expand (1-3x^2)/((1-x^2)^2) ?

The solution to expand (1-3x^2)/((1-x^2)^2) is (1-3x^2)/(1-2x^2+x^4)

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expand (1-3x^2)/((1-x^2)^2)

expand

\frac{1 - 3 x ^{2}}{( 1 - x ^{2} ) ^{2}}

\frac{1 - 3 x ^{2}}{1 - 2 x ^{2} + x ^{4}}

Solution steps

\frac{1 - 3 x ^{2}}{( 1 - x ^{2} ) ^{2}}

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

= \frac{1 - 3 x ^{2}}{1 - 2 x ^{2} + x ^{4}}

\frac{2 ( 4 a + 4 )}{a + 9}

\frac{x ( x - 8 )}{2}

e^{i (2 t + \frac{π}{4})}

\frac{7 ( x - 1 )}{( x + 1 ) ( x - 2 )}

\frac{2 ( X - 8 )}{5}

What is expand (1-3x^2)/((1-x^2)^2) ?
The solution to expand (1-3x^2)/((1-x^2)^2) is (1-3x^2)/(1-2x^2+x^4)