What is expand 1/((s^2-a^2)^2) ?

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

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expand 1/((s^2-a^2)^2)

expand

\frac{1}{( s ^{2} - a ^{2} ) ^{2}}

\frac{1}{s ^{4} - 2 a ^{2} s ^{2} + a ^{4}}

Solution steps

\frac{1}{( s ^{2} - a ^{2} ) ^{2}}

(s^{2} - a^{2})^{2} = s^{4} - 2 a^{2} s^{2} + a^{4}

= \frac{1}{s ^{4} - 2 a ^{2} s ^{2} + a ^{4}}

(4 + 5 i)^{4}

\frac{9}{10} \cdot e^{\frac{x}{2}} + \frac{4}{5} \cdot (- sin (x) + 2 cos (x))

\frac{x ( x + 4 )}{6 ( x - 9 )}

(5 - x - 1)^{2}

(x - 3 i) (x + 3 i) (x - 5)

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