What expression is (2x-6)2 - 2(2x2- 1) equivalent to ?

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.

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers