This is the problem: brooke has to set up 70 chairs in equal rows for the class talent show. but ,there is not room for more than 20 rows. what are the possible number of rows that brooke could set up?
plz what do i do

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  

∠cbe and ∠deb are same-side interior angles.

i took the test