展开 e^{2t}(t-1)(t+2)

解答

展开

e^{2 t} (t - 1) (t + 2)

e^{2 t} t^{2} + e^{2 t} t - 2 e^{2 t}

求解步骤

e^{2 t} (t - 1) (t + 2)

乘开

(t - 1) (t + 2) : t^{2} + t - 2

= e^{2 t} (t^{2} + t - 2)

乘开

e^{2 t} (t^{2} + t - 2) : e^{2 t} t^{2} + e^{2 t} t - 2 e^{2 t}

= e^{2 t} t^{2} + e^{2 t} t - 2 e^{2 t}

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