展开 ((9x+6))/((x+3)x*(x-4))

解答

展开

\frac{( 9 \cdot x + 6 )}{( x + 3 ) \cdot x \cdot ( x - 4 )}

\frac{9 x + 6}{x ^{3} - x ^{2} - 12 x}

求解步骤

\frac{9 x + 6}{( x + 3 ) x ( x - 4 )}

乘开

(x + 3) x (x - 4) : x^{3} - x^{2} - 12 x

= \frac{9 x + 6}{x ^{3} - x ^{2} - 12 x}

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

e x p an d (x + d x)^{6}

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

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

e x p an d \frac{56 y - 38}{3 ( y - 3 ) ( 5 y - 2 )}