Solve x^2=73

$${ x }^{ 2 } =73$$

Solve for x

$$x=\sqrt{73}\approx 8.544003745$$

$$x=-\sqrt{73}\approx -8.544003745$$

Steps by Finding Square Root

Take the square root of both sides of the equation.

$$x=\sqrt{73} x=-\sqrt{73}$$

Steps Using the Quadratic Formula

Subtract 73 from both sides.

$$x^{2}-73=0$$

This equation is in standard form: ax^{2}+bx+c=0. Substitute 1 for a, 0 for b, and -73 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.

$$x=\frac{0±\sqrt{0^{2}-4\left(-73\right)}}{2}$$

Square 0.

$$x=\frac{0±\sqrt{-4\left(-73\right)}}{2}$$

Multiply -4 times -73.

$$x=\frac{0±\sqrt{292}}{2}$$

Take the square root of 292.

$$x=\frac{0±2\sqrt{73}}{2}$$

Now solve the equation x=\frac{0±2\sqrt{73}}{2} when ± is plus.

$$x=\sqrt{73}$$

Now solve the equation x=\frac{0±2\sqrt{73}}{2} when ± is minus.

$$x=-\sqrt{73}$$

The equation is now solved.

$$x=\sqrt{73} x=-\sqrt{73}$$