展开 (-5t+21)/((t+1)^3)

解答

展开

\frac{- 5 t + 21}{( t + 1 ) ^{3}}

\frac{- 5 t + 21}{t ^{3} + 3 t ^{2} + 3 t + 1}

求解步骤

\frac{- 5 t + 21}{( t + 1 ) ^{3}}

(t + 1)^{3} = t^{3} + 3 t^{2} + 3 t + 1

= \frac{- 5 t + 21}{t ^{3} + 3 t ^{2} + 3 t + 1}

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