Answer :

Answer: 4x squared (1 + 7x)

Step-by-step explanation:

This is a polynomial expression, where each term is a monomial (a term with one variable raised to a power). To simplify, you can combine like terms

4x squared + 28x cubed

The simplified form is already presented. If you want to factor out the common factor, you can factor 4x squared from both terms

4x squared (1 + 7x)