Solve for x
x\in \left(-3,3\right)
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x^{2}<\frac{-18}{-2}
Divide both sides by -2. Since -2 is negative, the inequality direction is changed.
x^{2}<9
Divide -18 by -2 to get 9.
x^{2}<3^{2}
Calculate the square root of 9 and get 3. Rewrite 9 as 3^{2}.
|x|<3
Inequality holds for |x|<3.
x\in \left(-3,3\right)
Rewrite |x|<3 as x\in \left(-3,3\right).
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