HELP ILL GIVE 25 POINTS Part A: a^2 + 6 for a = 5

Part B: Show your work and/or explain how you arrived at your answer

What is the 12th term of b(n)=-4-2(n-1)

Ineed to know the answer to this algebra question.

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.