Solve for y
y=\sqrt{5}+2\approx 4.236067977
y=2-\sqrt{5}\approx -0.236067977
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y-2=\sqrt{5} y-2=-\sqrt{5}
Take the square root of both sides of the equation.
y-2-\left(-2\right)=\sqrt{5}-\left(-2\right) y-2-\left(-2\right)=-\sqrt{5}-\left(-2\right)
Add 2 to both sides of the equation.
y=\sqrt{5}-\left(-2\right) y=-\sqrt{5}-\left(-2\right)
Subtracting -2 from itself leaves 0.
y=\sqrt{5}+2
Subtract -2 from \sqrt{5}.
y=2-\sqrt{5}
Subtract -2 from -\sqrt{5}.
y=\sqrt{5}+2 y=2-\sqrt{5}
The equation is now solved.
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