$\"\"$

The equation is $\"\"$ .

Solve the equation.

$\"\"$ (Original equation)

$\"\"$ (Rewrite the equation)

$\"\"$ (Difference of cubes)

$\"\"$ and $\"\"$ (Zero product property)

$\"\"$ and $\"\"$ (Solve for $\"\"$ )

The equation has three roots, one real root and two imaginary roots, $\"\"$ and $\"\"$ .

$\"\"$

Check solution for $\"\"$ -values.

Graph:

Graph the equation $\"\"$ .

$\"\"$

Observe the graph:

The graph cross the $\"\"$ - axis at $\"\"$ .

Therefore, the value of $\"\"$ is $\"\"$ . $\"\"$

The equation has three roots, one real root and two imaginary roots.