Solve for x
x=\sqrt{15}-3\approx 0.872983346
x=-\left(\sqrt{15}+3\right)\approx -6.872983346
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x+3=\sqrt{15} x+3=-\sqrt{15}
Take the square root of both sides of the equation.
x+3-3=\sqrt{15}-3 x+3-3=-\sqrt{15}-3
Subtract 3 from both sides of the equation.
x=\sqrt{15}-3 x=-\sqrt{15}-3
Subtracting 3 from itself leaves 0.
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