There are 20 parrots at the animal sanctuary. their population is increasing at a rate of 15% per year. there is also 24 snakes at the sanctuary. each year 4 more snakes are born.

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  

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

1 is c

2 is a

3 is a

step-by-step explanation: