展开 (s^2+4s-5)/((s^2+4s+13)^2)

解答

展开

\frac{s ^{2} + 4 s - 5}{( s ^{2} + 4 s + 13 ) ^{2}}

\frac{s ^{2} + 4 s - 5}{s ^{4} + 8 s ^{3} + 42 s ^{2} + 104 s + 169}

求解步骤

\frac{s ^{2} + 4 s - 5}{( s ^{2} + 4 s + 13 ) ^{2}}

(s^{2} + 4 s + 13)^{2} = s^{4} + 8 s^{3} + 42 s^{2} + 104 s + 169

= \frac{s ^{2} + 4 s - 5}{s ^{4} + 8 s ^{3} + 42 s ^{2} + 104 s + 169}

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