展开 (5s^2+s+4)/((s+4)(s^2+4))

解答

展开

\frac{5 s ^{2} + s + 4}{( s + 4 ) ( s ^{2} + 4 )}

\frac{5 s ^{2} + s + 4}{s ^{3} + 4 s + 4 s ^{2} + 16}

求解步骤

\frac{5 s ^{2} + s + 4}{( s + 4 ) ( s ^{2} + 4 )}

乘开

(s + 4) (s^{2} + 4) : s^{3} + 4 s + 4 s^{2} + 16

= \frac{5 s ^{2} + s + 4}{s ^{3} + 4 s + 4 s ^{2} + 16}

e x p an d (6 - x + 2) (3 - x - 1)

e x p an d \frac{\partial}{\partial x} ((x - y)^{2}) + (y - 2)^{2}

e x p an d \frac{( x + Δ x ) ^{(2)} + ( x + Δ x )}{( 3 )}

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

e x p an d \frac{7 ( - 2 y + 85 )}{6}