D o Now:. Put your homework in the basket. What is the area of a rectangle? A triangle? Find the area of the rectangle whose length is (x + 3) and whose width is (2x + 5). Homework . Factoring Word Problems #1.
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The area of a rectangular door is given by the trinomial x2 – 14x + 45. The door’s width is (x – 9). What is the door’s length?
(x – 5)
The area of a rectangular painting is given by the trinomial a2 – 6a – 16. The painting’s length is
(a + 2). What is the perimeter of the painting?
4x - 12
The area of a rectangular computer screen is
4x2+ 20x +16. The width of the screen is 2x + 8. What is the length of the screen?
2x + 2
The area of a rectangular granite countertop is 12x2 + 10x – 12. The width of the countertop is 2x + 3. What is the length of the countertop?
6x - 4
Find the missing side if the area is 6x2 + 33x + 42.