Solve for x
x\in \left(-\infty,-3\right)\cup \left(3,\infty\right)
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x^{2}>9
Add 9 to both sides.
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<-3\text{; }x>3
Rewrite |x|>3 as x<-3\text{; }x>3.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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