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

The solution to expand 1/((1+s)(1+s+s^2)) is 1/(s^3+2s^2+2s+1)

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

expand

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

\frac{1}{s ^{3} + 2 s ^{2} + 2 s + 1}

Solution steps

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

Expand

(1 + s) (1 + s + s^{2}) : s^{3} + 2 s^{2} + 2 s + 1

= \frac{1}{s ^{3} + 2 s ^{2} + 2 s + 1}

(3 z + 3) (3 z - 3)^{'}

π 2 (1 + \frac{π ^{2}}{3})

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

y (x + 1) + y^{'} (x)

(x^{2} + 4 x - 2)^{9}

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