展开-(6(s+1))/((s^2+5s+6))

解答

展开

- \frac{6 ( s + 1 )}{( s ^{2} + 5 s + 6 )}

- \frac{6 s + 6}{s ^{2} + 5 s + 6}

求解步骤

- \frac{6 ( s + 1 )}{s ^{2} + 5 s + 6}

乘开

6 (s + 1) : 6 s + 6

= - \frac{6 s + 6}{s ^{2} + 5 s + 6}

e x p an d (2, - 2) y (5, - 3)

e x p an d (- 2 x)^{\circ - 1} (x + y)

e x p an d \frac{4}{( 3 - x ) ^{3}}

e x p an d \frac{a + b ( a + b y )}{a - b ( a - b y )}

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