What is the positioning error indicated by the radiopacity in the center of the image (see arrows)

A periapical granuloma, cyst, or abscess cannot be identified from a dental image and can only be differentiated with microscopic evaluation. 

Submit all scratch paper. If you used scratch paper on this exam, please take legible photos of all work (i.e. both sides of every sheet) and upload your images in the exam comments. Comments can be accessed through Speedgrader: Go to your Gradebook, after you have submitted the exam. Click on the exam title. Find the comments box on the right side of your screen. Attachments can be added using the paperclip icon beneath the text box. Reach out immediately if you have any questions.

10.  Solve the equation by factoring and using the zero-product property.

22. Solve the quadratic equation using the quadratic formula.

25.  Solve the quadratic equation using the quadratic formula.

23.  Solve the quadratic equation using the quadratic formula.  

24.  Solve the quadratic equation using the quadratic formula.

19. Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial.

11.  Solve the equation by factoring and using the zero-product property.