Solve for u u^2=0

$u^{2} = 0$

Take the square root of both sides of the equation to eliminate the exponent on the left side.

$u = \pm \sqrt{0}$

Simplify $\pm \sqrt{0}$ .

Rewrite $0$ as $0^{2}$ .

$u = \pm \sqrt{0^{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$u = \pm 0$

Plus or minus $0$ is $0$ .

$u = 0$