The polynomial is .

The general quadratic expression form is .

In the above trinomial, .You need to find two numbers with a sum of 19 and a product of  .Make a list of the factors of 48 and look for the of factors with the sum of 19.

The correct factors are .

Apply the pattern: .

Group terms with common factors.

Factors the GCF from each group.

Notice that is common in both groups, so it becomes the GCF.

Apply distributive property: .

The factors of polynomial is .