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

The solution to expand (1+s^2)/(s^2(s-3)^2) is (1+s^2)/(s^4-6s^3+9s^2)

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expand (1+s^2)/(s^2(s-3)^2)

expand

\frac{1 + s ^{2}}{s ^{2} ( s - 3 ) ^{2}}

\frac{1 + s ^{2}}{s ^{4} - 6 s ^{3} + 9 s ^{2}}

Solution steps

\frac{1 + s ^{2}}{s ^{2} ( s - 3 ) ^{2}}

(s - 3)^{2} = s^{2} - 6 s + 9

= \frac{1 + s ^{2}}{s ^{2} ( s ^{2} - 6 s + 9 )}

Expand

s^{2} (s^{2} - 6 s + 9) : s^{4} - 6 s^{3} + 9 s^{2}

= \frac{1 + s ^{2}}{s ^{4} - 6 s ^{3} + 9 s ^{2}}

f^{'} (x) (x + 4)^{2} (x - 3)

5 (2 + 1)

\frac{( a + b ) x + ( a - b ) ∣ x ∣}{2 x}

\frac{1}{2} (- \frac{1}{4} cos (4 θ) - \frac{1}{2} cos (2 θ))

What is expand (1+s^2)/(s^2(s-3)^2) ?
The solution to expand (1+s^2)/(s^2(s-3)^2) is (1+s^2)/(s^4-6s^3+9s^2)