Need help getting a equation that you distribute that will equal x=6

Which of the following are accepted without proof in a logical system? check all that apply.

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)

Write a function rule for  “the output is  5 less than the input.” let  xx  be the input and let  yy  be the output.