展开 (6s^2+50)/((s+3)(s^2+4))

解答

展开

\frac{6 s ^{2} + 50}{( s + 3 ) ( s ^{2} + 4 )}

\frac{6 s ^{2} + 50}{s ^{3} + 4 s + 3 s ^{2} + 12}

求解步骤

\frac{6 s ^{2} + 50}{( s + 3 ) ( s ^{2} + 4 )}

乘开

(s + 3) (s^{2} + 4) : s^{3} + 4 s + 3 s^{2} + 12

= \frac{6 s ^{2} + 50}{s ^{3} + 4 s + 3 s ^{2} + 12}

e x p an d \frac{l - 12 s ^{2} - 1}{( s ^{2} + 4 ) ( s ^{2} + 1 )}

e x p an d (y - y x) d x + x d y

e x p an d \frac{( x + 7 ) ( x - 3 )}{( x - 5 ) ^{2}}

e x p an d x^{3}

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