展开 (2n+3)/((n-1)n(n+1))

解答

展开

\frac{2 n + 3}{( n - 1 ) n ( n + 1 )}

\frac{2 n + 3}{n ^{3} - n}

求解步骤

\frac{2 n + 3}{( n - 1 ) n ( n + 1 )}

乘开

(n - 1) n (n + 1) : n^{3} - n

= \frac{2 n + 3}{n ^{3} - n}

s im pl i f y x \cdot y \cdot (4 - x^{2} - \frac{y ^{2}}{4})

e x p an d sinh (3 (t - 5))

e x p an d lo g_{10} (5) (8 x - 1)

e x p an d (\frac{3}{2}) \cdot (\frac{3}{2}) \cdot (\frac{4}{2})

e x p an d (x)^{\frac{1}{3}} ((x)^{2} - 4)