展开 (10)/((x-1)(x^2+9))

解答

展开

\frac{10}{( x - 1 ) ( x ^{2} + 9 )}

\frac{10}{x ^{3} + 9 x - x ^{2} - 9}

求解步骤

\frac{10}{( x - 1 ) ( x ^{2} + 9 )}

乘开

(x - 1) (x^{2} + 9) : x^{3} + 9 x - x^{2} - 9

= \frac{10}{x ^{3} + 9 x - x ^{2} - 9}

e x p an d \frac{s + 2}{( s + 4 ) ( s ^{2} + 7 s + 12 )}

e x p an d \frac{19 ( 40 s + 11 )}{6 ( 4 s + 3 ) ^{2} ( 5 s - 1 ) ^{2}}

e x p an d 6 (3 x - 10 = 5 (2 x + 15))

e x p an d \frac{( x + 2 ) ( x + 1 ) ( 2 x + 3 )}{( x + 2 ) ( x + 1 )}

e x p an d \frac{( n + 1 ) ( n + 2 ) ( 2 n + 9 )}{6}