The given function is .

                              (Substitute f(x) = 0)

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

And multiply each side by .

           (Cancel common terms)

Apply zero product property: .

The factors of 6: 3, 2 (or) 2, 3 (or) 6, 1 (or) 1, 6.

To find two numbers with a sum of 1 and a product of 6.

The correct factors are 3, 2 and 6, So m = 3, n = 2.

Then write the factors form .

                   (Group terms with common factors)

                    (Factors the grouping terms)

                            (Take out common term )

Apply zero product property: If then a = 0 (or) b = 0.

Solve for first factor .

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

                                (Subtract 2 from each side)

                                              (Apply additive inverse property: )

Solve for second factor .

Apply subtraction property of equality: If a = b then a + c = b + c.

                                (Add 3 to each side)

                                                  (Apply additive inverse property: )

The roots are 2, and 3.