展开 (2x^2)/((2x-1)(x+1))

解答

展开

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

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

求解步骤

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

乘开

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

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

e x p an d \frac{1}{( x - 3 ) ( x - 1 )}

e x p an d 8 + 2 k + (8, 8 + k) \cdot (x - 0, y - 2)

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

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

e x p an d \frac{λ ( λ - 1 ) ( λ - 2 ) ( λ - 3 )}{24}