展开 (2x^2-4x-3)/((x+1)(2x-1))

解答

展开

\frac{2 x ^{2} - 4 x - 3}{( x + 1 ) ( 2 x - 1 )}

\frac{2 x ^{2} - 4 x - 3}{2 x ^{2} + x - 1}

求解步骤

\frac{2 x ^{2} - 4 x - 3}{( x + 1 ) ( 2 x - 1 )}

乘开

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

= \frac{2 x ^{2} - 4 x - 3}{2 x ^{2} + x - 1}

e x p an d \frac{2 s}{( s - 1 ) ( s ^{2} + 25 )}

\frac{d}{d y} ((x) (1 + 3 x)^{5})

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

s im pl i f y (1 - x 7)^{2}

s im pl i f y x (x + \frac{1}{x})