展开 (5x+13)/((x-1)(x+5))

解答

展开

\frac{5 x + 13}{( x - 1 ) ( x + 5 )}

\frac{5 x + 13}{x ^{2} + 4 x - 5}

求解步骤

\frac{5 x + 13}{( x - 1 ) ( x + 5 )}

乘开

(x - 1) (x + 5) : x^{2} + 4 x - 5

= \frac{5 x + 13}{x ^{2} + 4 x - 5}

e x p an d \frac{1 - e ^{- 3 s}}{s ( s ^{2} + 2 s + 10 )}

e x p an d (1 + 2 cos (t)) \cdot (2 sin (t))

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

e x p an d (4 x^{2} + 3 cos (y)) d x - x sin (y) d y

e x p an d - 10 x^{\frac{2}{3}} (4 x^{4} - 4 x^{2} + 5)