Solve for x
x=3\sqrt{2}-4\approx 0.242640687
x=-3\sqrt{2}-4\approx -8.242640687
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x+4=3\sqrt{2} x+4=-3\sqrt{2}
Take the square root of both sides of the equation.
x+4-4=3\sqrt{2}-4 x+4-4=-3\sqrt{2}-4
Subtract 4 from both sides of the equation.
x=3\sqrt{2}-4 x=-3\sqrt{2}-4
Subtracting 4 from itself leaves 0.
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