Lesson 2

You have now learned how to multiply and divide rational expressions. In the final section of this lesson you will consider an application of rational expressions in the sport of lacrosse.

Lacrosse, like jai alai, is a sport where players toss the game ball using sticks with baskets on the ends. Lacrosse has origins in aboriginal culture. In Self-Check 3 you will analyze the dimensions of a lacrosse field using rational expressions.

Self-Check 3

1. The diagram shows the layout of a lacrosse field. The area outlined in white is called the goal area. The location of the goal is marked by the circle in the goal area.
   
   
   
   
   1. Write an expression for the area in factored form. Answer
      
      
   2. Write an expression for the width of the goal area in factored form. Answer
      
      
   3. Use the two expressions to determine the length of the goal area. Answer
      
      
   4. If x = 18, determine the dimensions of the goal area. Report the dimensions in yards. Answer