展开 (3(a-b))/(5(a+b))

解答

展开

\frac{3 ( a - b )}{5 ( a + b )}

\frac{3 a - 3 b}{5 a + 5 b}

求解步骤

\frac{3 ( a - b )}{5 ( a + b )}

乘开

5 (a + b) : 5 a + 5 b

= \frac{3 ( a - b )}{5 a + 5 b}

乘开

3 (a - b) : 3 a - 3 b

= \frac{3 a - 3 b}{5 a + 5 b}

e x p an d \frac{s - 4}{( s + 1 ) ( s ^{2} + 1 )}

e x p an d k (\frac{e ^{r t}}{r} + C)

e x p an d (5 x + 3 e^{y}) d x + 2 x e^{y} d y

e x p an d \frac{( 3 x + 1 ) ^{\frac{3}{2}} ( 18 x - 4 )}{135}

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