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

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

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

expand

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

\frac{s}{t ^{4} + t ^{2} + s ^{2} t ^{2} + s ^{2}}

Solution steps

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

Expand

(t^{2} + s^{2}) (t^{2} + 1) : t^{4} + t^{2} + s^{2} t^{2} + s^{2}

= \frac{s}{t ^{4} + t ^{2} + s ^{2} t ^{2} + s ^{2}}

(x - 33) (x + 33)

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x^{2} - x l e f t (x - 1)

(x - 2) e^{x}

(x cos (θ) - y sin (θ))^{2}

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