Need help please explain how you got the answer.

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x