$\"\"$

The quadratic equation is $\"\"$ . The equation compare to quadratic equation, then a = 1, b = 7 and c = 6.

Quadratic formula: $\"\"$ .

$\"\"$ (Substitute a = 1, b = 7 and c = 6)

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

$\"\"$ (Simplify)

$\"\"$ (Subtract: 49 - 24 = 25) $\"\"$

Evaluate square roots: $\"\"$

$\"\"$

Separate the solutions $\"\"$ .

$\"\"$ (Simplify)

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

The solution set is $\"\"$ .