Solve the following problems.

1. The three sides of a triangle measures (3×2+×-2), (-5×2+4) and (15×2-4×-9) respectively. What is the perimeter of the triangle?

2. There are (12a2+4a+15) children in a classroom. If the number of boys is 4a2-9a+8, how many girls are in the classroom?

3. John Ike made a layout of the garden where he planned to put his Aglonemaand Sanseveria Plant for business. In order to protect his plants from direct sunlight, he needs to cover the garden with nets on top of it. To determine the dimensions of tue net he needs to buy to cover the top of a garden, he must be able to compute the area of the garden first. The length of the garden is ×5 and its widthis ×3. What expression represents the area of the garden? (Hint: The area of a rectangle is A = lw)

4. Yvanna has a square with a side of length s feet. If she increases the length by 5 feet and then decreased tye width by 2 feet, what trinomial represents the area of the new rectangular garden?
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