展开 (6x^2-4x)/((x+2)^2(x-1))

解答

展开

\frac{6 x ^{2} - 4 x}{( x + 2 ) ^{2} ( x - 1 )}

\frac{6 x ^{2} - 4 x}{x ^{3} + 3 x ^{2} - 4}

求解步骤

\frac{6 x ^{2} - 4 x}{( x + 2 ) ^{2} ( x - 1 )}

(x + 2)^{2} = x^{2} + 4 x + 4

= \frac{6 x ^{2} - 4 x}{( x ^{2} + 4 x + 4 ) ( x - 1 )}

乘开

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

= \frac{6 x ^{2} - 4 x}{x ^{3} + 3 x ^{2} - 4}

e x p an d 4 (x^{2} + 2 x - 4)^{5}

e x p an d (7 v^{2} - 4 v - 3) (6 v - 2^{^{'}})

e x p an d (5 x - 8 q^{2})^{2 (m - 2)}

e x p an d lo g_{6} (3 8 \cdot 7 \cdot 11)

e x p an d \frac{2}{( ( s + 2 ) \cdot ( s + 1 ) )}