展开 (2x+3)/((x-k)(x+4))

解答

展开

\frac{2 x + 3}{( x - k ) ( x + 4 )}

\frac{2 x + 3}{x ^{2} + 4 x - k x - 4 k}

求解步骤

\frac{2 x + 3}{( x - k ) ( x + 4 )}

乘开

(x - k) (x + 4) : x^{2} + 4 x - k x - 4 k

= \frac{2 x + 3}{x ^{2} + 4 x - k x - 4 k}

e x p an d 50 (1 - 0.4 e^{4 x})

e x p an d \frac{( 2 x + 1 ) ^{3}}{6}

e x p an d - \frac{x ^{2} - 29 x + 118}{( x + 5 ) ( x - 7 ) ^{2}}

s im pl i f y 7974.4 c + \frac{376800 ( c - 50 )}{c} - 468076.8

e x p an d \frac{6}{5} (1 - e^{- 20 t})