Vertex Form of a Quadratic Function Please help and explain your answer I have been stuck on this question for a while only answer 28

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6

How do you do the foil method with polynomials?