Rewrite the expressions below by completing the square.
x^2 -6x +5

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

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?