What is expand 1/((s^2+k^2)^2) ?

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

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expand 1/((s^2+k^2)^2)

expand

\frac{1}{( s ^{2} + k ^{2} ) ^{2}}

\frac{1}{s ^{4} + 2 k ^{2} s ^{2} + k ^{4}}

Solution steps

\frac{1}{( s ^{2} + k ^{2} ) ^{2}}

(s^{2} + k^{2})^{2} = s^{4} + 2 k^{2} s^{2} + k^{4}

= \frac{1}{s ^{4} + 2 k ^{2} s ^{2} + k ^{4}}

(- \frac{2}{7}, 6) y (1, - 3)

(4 x y^{2} + 3 y) d x + (3 x^{2} y + 2 x) d y

\frac{s}{( s ^{2} + w ^{2} ) ^{2}}

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

3 - \frac{7 - 2 t}{3} - t

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