Mister Exam

Lang:

Solving inequalities/ z^2-9

z^2-9 inequation

You have entered [src]

 2        
z  - 9 > 0

$$z^{2} - 9 > 0$$

z^2 - 9 > 0

Rapid solution 2 [src]

(-oo, -3) U (3, oo)

$$x\ in\ \left(-\infty, -3\right) \cup \left(3, \infty\right)$$

x in Union(Interval.open(-oo, -3), Interval.open(3, oo))

Rapid solution [src]

Or(And(-oo < z, z < -3), And(3 < z, z < oo))

$$\left(-\infty < z \wedge z < -3\right) \vee \left(3 < z \wedge z < \infty\right)$$

((-oo < z)∧(z < -3))∨((3 < z)∧(z < oo))