$\"\"$

The equation is $\"\"$ .

Find the discriminant.

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

$\"\"$ (Evaluate powers: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ )

$\"\"$ (Subtract)

As the discriminant is zero, there is one $\"\"$ -intercept.

Find the real zeros.

$\"\"$ (Original equation)

$\"\"$ (Factors)

$\"\"$ (Group of the factors)

$\"\"$ ( $\"\"$ )

$\"\"$ (Simplify)

So the only real zero is $\"\"$ .

The discriminant is zero.

$\"\"$

The discriminant is zero and only real zero is $\"\"$ .