With these questions. explain how you got to the answer. i really need ! you!

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Carly stated, “all pairs of rectangles are dilations.” which pair of rectangles would prove that carly’s statement is incorrect?

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?