The equation is .

               (Add 1 to each side)

                     (Add 4 to each side)

The perfect square of the given trinomial .

                            (Take the square root of each side)

Apply square roots property: If then .

Apply addition property of equality: If a = b then .

                     (Add 2 to each side)

                                 (Apply additive inverse property: )

Using the calculator and evaluate square roots.

Separate the solutions .

The solution set is .