All of them are true.
A: Rule.
B: There exist such functions f and g that satisfy the equality.
C: According to (A) this is acceptable.
D: Rule.
Hope this helps.
2(3x+2)(3x-2) ...hope this helps
The answer: the second one y= -2x+7
I'm not sure how you want me to answer this question? WHat are you tryng to solve for?