\"\"

\

The qudractic function is \"\".

\

To find the x-intercept.

\

\"\"                                       (Substitute f (x) = 0)

\

\"\"

\

The equation compare to quadratic equation, then a = 13, b = \"\"16 and c = \"\"4.\"\"

\

Quadratic formula: \"\".

\

\"\"     (Substitute a = 13, b = \"\"16 and c = \"\"4)

\

\"\"                     (Product of two same signs is positive)

\

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

\

\"\"                                  (Simplify)

\

\"\"                                             (Add: 121 + 208)\"\"

\

Using calculator and Evaluate square roots: \"\".

\

\"\"

\

Separate the solutions \"\".

\

\"\"            (Simplify)

\

\"\"              (Divide: \"\")\"\"

\

The solution set is \"\".