Find ? Help answer please

Josephine has a great garden with and area of 2x2 + x - 6 square feet

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Select all the expressions that will include a remainder.