Solve for x
x=\sqrt{311}-15\approx 2.635192089
x=-\left(\sqrt{311}+15\right)\approx -32.635192089
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x+15=\sqrt{311} x+15=-\sqrt{311}
Take the square root of both sides of the equation.
x+15-15=\sqrt{311}-15 x+15-15=-\sqrt{311}-15
Subtract 15 from both sides of the equation.
x=\sqrt{311}-15 x=-\sqrt{311}-15
Subtracting 15 from itself leaves 0.
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