$\"\"$

The quadratic equation is $\"\"$ .

The equation compare to quadratic equation, then x = y, a = 5, b = - 1 and c = - 4.

Quadratic formula: $\"\"$ .

$\"\"$ (Substitute x = y, a = 5, b = - 1 and c = - 4)

$\"\"$ (Evaluate power: $\"\"$ )

$\"\"$ (Simplify)

$\"\"$ (Add: $\"\"$ ) $\"\"$

Evaluate square roots: $\"\"$ .

$\"\"$

Separate the solutions $\"\"$ .

$\"\"$ (Simplify)

$\"\"$

The solution set is $\"\"$ .