A square has sides length s. When one side is increased by 2 inches and the other is decreased by 2 inches, the resulting rectangle has an area of 60 square inches. What was the original s=?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

State one method by which you can recognize a perfect square trinomial.

I’m really confused and need to learn this