Respuesta :

An example of Glencoe algebra 1 standardized test is simply 9a² + 7a + 4a² + 2a.

What is Glencoe Algebra 1 about?

This is known to be a type of Textbook that is a  Series. Its aim is to link math content and  produce a set of adaptive instruction for students to succeed in algebra.

In the  simplification of 9a² + 7a + 4a²  2a. you add like terms together.

Therefore, the answer will be 13a² + 9a

Learn more about algebra  from

https://brainly.com/question/22399890