Tammy has appointed a chairperson to lead a city restoration project. The first act is to plant a tree, flowers, and a statue in one of the city's parks. The park is a rectangle with an area of (78x2+131x-22) m2, as shown in the following figure. The length and width of the park are perfect factors of the area.

a Factor by grouping to find the length and width of the park.

b A tree is to be placed in the center of the park with a rectangular flower garden around it. The area of the flower garden is (3x2+14x+8) m2. Factor the area to find the lengths of the sides of the flower garden.

c

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