$\"\"$

The inequality is $\"\"$ .

Solve the inequality.

$\"\"$ (Related function)

$\"\"$ (Quadratic formula)

$\"\"$ (Substitute $\"\"$ and $\"\"$ )

$\"\"$ (Simplify)

$\"\"$ or $\"\"$ (Write into two equations)

Graph:

Graph the parabola.

$\"\"$

Observe the graph:

The graph lies below the $\"\"$ -axis at imaginary roots $\"\"$ and $\"\"$ .

Hence the roots are imaginary.

The solution set of the inequality is all real numbers.

$\"\"$

Solution set is all real numbers.