An administrator believes that the placement of motivational posters on the walls in classrooms of academic buildings will lead to increased gpas at his school. to test his theory, he randomly assigns certain classrooms within the college of liberal arts and sciences to have the posters, while others do not. none of the remaining four academic colleges have any posters placed in their classrooms. what is most likely to be the hypothesis in this study?

Step-by-step explanation:

if motivational posters are placed in the walls of classrooms, then GPAs will/will not (you would decide this) increase/remain the same (based on your previous choice)

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1