(x-1)(x+5)<0

解答

(x - 1) (x + 5) < 0

- 5 < x < 1

间隔符号

(- 5, 1)

求解步骤

(x - 1) (x + 5) < 0

确定区间

- 5 < x < 1

s im pl i f y (6 x^{3})^{2}

\frac{r}{6} < - 6 or 4 r + 2 > 18

3 x^{2} - 7 x - 20 = 0

w - 15 = - 4

s im pl i f y \frac{\frac{x}{y} - \frac{y}{x}}{\frac{1}{4 x ^{2}} - \frac{1}{4 y ^{2}}}