展开 (-2x^2-3x-1)/(x(x-1))

解答

展开

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

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

求解步骤

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

乘开

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

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

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

e x p an d \frac{( x + 2 ) ^{2}}{5}

e x p an d, x^{2} - (a + d) x + (a d - b c)

e x p an d A (4, - 8, 3) B (2, - 1, 4) C (- 4, 9, 12)

e x p an d s (7 - 12 t + t^{2} + 20 ln (t + 1))