New crust forms: a. at the asthenosphere. b. near a convergent boundary. c. where two plates collide. d. at ocean ridges.

New crust forms AT OCEAN RIDGES. The correct option is D.
Middle ocean ridges are the boundary that occur between tectonic plates and they are the locations where the plates move away from each other. At the edges of the ridges, magma from the underneath mantle erupts, cools and become solidified, thus forming new ocean crust. 

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2

Plz put the answer choices thx.