$\"\"$

The equation is $\"\"$ .

Add 4 to each side.

$\"\"$

The standard form of quadratic equation in x - variables is $\"\"$ , where $\"\"$ .

Graph the related function $\"\"$ .

$\"graph$

Observe the graph, the graph intersect the x - axis at only one point $\"\"$ . So the equation has only one solution and the solution is $\"\"$ .

$\"\"$

To check the solution, the values of $\"\"$ substitute in the original equation, $\"\"$ .

$\"\"$

$\"\"$ (solution checks) $\"\"$

The solution is $\"\"$ .