Mister Exam
9x^2-11x+4>x inequation
The solution
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2 9*x - 11*x + 4 > x
$$\left(9 x^{2} - 11 x\right) + 4 > x$$
9*x^2 - 11*x + 4 > x
Solving inequality on a graph
Rapid solution
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And(x > -oo, x < oo, x != 2/3)
$$x > -\infty \wedge x < \infty \wedge x \neq \frac{2}{3}$$
(x > -oo)∧(x < oo)∧(Ne(x, 2/3))
Rapid solution 2
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(-oo, 2/3) U (2/3, oo)
$$x\ in\ \left(-\infty, \frac{2}{3}\right) \cup \left(\frac{2}{3}, \infty\right)$$
x in Union(Interval.open(-oo, 2/3), Interval.open(2/3, oo))