展开 ((2s-2))/((s^2-2s+5)^2)

解答

展开

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

\frac{2 s - 2}{s ^{4} - 4 s ^{3} + 14 s ^{2} - 20 s + 25}

求解步骤

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

(s^{2} - 2 s + 5)^{2} = s^{4} - 4 s^{3} + 14 s^{2} - 20 s + 25

= \frac{2 s - 2}{s ^{4} - 4 s ^{3} + 14 s ^{2} - 20 s + 25}

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

e x p an d \frac{( 2 x - 7 ) ( 3 x ^{2} - 4 + x )}{( 3 x - 5 ) ^{3}}

e x p an d lo g_{10} (10) x^{3} y

e x p an d x^{2} + i^{3} x + i^{2}

e x p an d \frac{10}{( x + 1 ) ^{3}}