A²-9-6b-b² factorize​

There you go

Just rearrange the terms in a way that we get a whole square form at one side and a^2 - b^2 form from it.

The predicted number of wins for a team that has an attendance of 2,100 is 25.49.

Step-by-step explanation:

The regression  equation for the relationship between game attendance (in thousands) and the number of  wins for baseball teams is as follows:

Here,

y = number of wins

x = attendance (in thousands)

Compute the number of wins for a team that has an attendance of 2,100 as follows:

Thus, the predicted number of wins for a team that has an attendance of 2,100 is 25.49.