展开-1/((x+1)^2(x+6))

解答

展开

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

- \frac{1}{x ^{3} + 8 x ^{2} + 13 x + 6}

求解步骤

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

(x + 1)^{2} = x^{2} + 2 x + 1

= - \frac{1}{( x ^{2} + 2 x + 1 ) ( x + 6 )}

乘开

(x^{2} + 2 x + 1) (x + 6) : x^{3} + 8 x^{2} + 13 x + 6

= - \frac{1}{x ^{3} + 8 x ^{2} + 13 x + 6}

e x p an d e^{3 (t - 6)} U (t - 6)

e x p an d y (3 - \frac{1}{2} x - \frac{3}{2} y)^{2}

e x p an d (8)^{2}

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

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