X = ?
can y’all please help a girl out

What is the value of this expression when b= 5 6 (2b-4)

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36