展开 (6s+2s^2+2)/((s+1)(s^2+1))

解答

展开

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

\frac{6 s + 2 s ^{2} + 2}{s ^{3} + s + s ^{2} + 1}

求解步骤

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

乘开

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

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

e x p an d \frac{3 ( 3 - 3 )}{2}

e x p an d \frac{2 e ^{x} - x e ^{2}}{( 1 - x ) ^{2}}

\frac{d ^{2}}{d x ^{2}} ((f (x, y)) (- 6 x y - 6 x))

e x p an d \frac{- 3 x ^{3} + 23 s ^{2} + 578}{s ^{2} ( s ^{2} - 6 s + 34 )}

e x p an d \frac{( 2 x y + 1 ) ^{7}}{128}