What is the circumference of a 12-inch diameter pizza? leave the answer in terms of .

C = πd = π(12 in) = 12π in

Step-by-step explanation:

Leave the answer in terms of π.

The formula for the circumference of a circle is C = πd, where d is the diameter.  

Substituting 12 in for d, we get the circumference of the pizza:

C = πd = π(12 in) = 12π in

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  

the answer will be