Math

Assignment: Quadratic Expressions 17. Greg works as a caretaker at a park. In the fall, he rakes all the leaves in the rectangular park. The length of the park is 3x + 1 and the width of the park is 2x + 4, both measured in metres. a) Find the quadratic expression that represents the area of the park. [2] b) Calculate the actual area that Greg has to rake if x = 5 m. [1] Thinking: 18. Josh expanded (6-7x) and got 36-49x . When Jennifer expanded the same expression, she got 36+49x" . Who is correct? Explain your reasoning. [3] 19. Is the product of two binomials always a trinomial? Explain using examples. [2]