展开 (4(x-3))/(x-5)

解答

展开

\frac{4 ( x - 3 )}{x - 5}

\frac{4 x - 12}{x - 5}

求解步骤

\frac{4 ( x - 3 )}{x - 5}

乘开

4 (x - 3) : 4 x - 12

= \frac{4 x - 12}{x - 5}

s im pl i f y (3 x + 1) (3 x - 1)

e x p an d \frac{8 l ^{2} - 16 l + a ^{2} + 6 a - 6 l a + 8}{( - 2 l + 2 + a ) ^{2}}

e x p an d (4 x + 7 y = - 8, 0) \cdot 3 + (3 x + 5 y = - 58) \cdot (- 4)

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

e x p an d e^{3 y} (y - x^{4})