Solve for b
b=2\sqrt{7}-3\approx 2.291502622
b=-2\sqrt{7}-3\approx -8.291502622
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b+3=2\sqrt{7} b+3=-2\sqrt{7}
Take the square root of both sides of the equation.
b+3-3=2\sqrt{7}-3 b+3-3=-2\sqrt{7}-3
Subtract 3 from both sides of the equation.
b=2\sqrt{7}-3 b=-2\sqrt{7}-3
Subtracting 3 from itself leaves 0.
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