Solve for x
x=\sqrt{42}-8\approx -1.519259302
x=-\left(\sqrt{42}+8\right)\approx -14.480740698
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x+8=\sqrt{42} x+8=-\sqrt{42}
Take the square root of both sides of the equation.
x+8-8=\sqrt{42}-8 x+8-8=-\sqrt{42}-8
Subtract 8 from both sides of the equation.
x=\sqrt{42}-8 x=-\sqrt{42}-8
Subtracting 8 from itself leaves 0.
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