This polynomial has only 3 terms, so it is a trinomial. <em>Hope it helps!</em>
The answer would be 15,120
It's a translation.
A reflection across a line is like flipping that object like a pancake over the line. It gets turned upside-down.
When you flip the pancake again, now across a parallel line, it gets turned right-side up again, just in a new location.
