展开 (2x^2)/((5x+1)(x-2))

解答

展开

\frac{2 x ^{2}}{( 5 x + 1 ) ( x - 2 )}

\frac{2 x ^{2}}{5 x ^{2} - 9 x - 2}

求解步骤

\frac{2 x ^{2}}{( 5 x + 1 ) ( x - 2 )}

乘开

(5 x + 1) (x - 2) : 5 x^{2} - 9 x - 2

= \frac{2 x ^{2}}{5 x ^{2} - 9 x - 2}

e x p an d sec (t) (5 sec (t) + 3 tan (t)) d t

e x p an d A (12, 7) B (- 3, 5) C (10, - 4)

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

e x p an d (2 x - 3 y + c) (4 z - x^{\circ} + 2 x y)

e x p an d \frac{1}{x ( b - x )}