Algebra-1 Problems

5.12 Multiplication and Addition of Polynomials

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A rectangular field has sides: (40 + x) ft and (40 - x) ft respectively. The entire field is covered with grass except for the rectangular cemented region with sides: (5 + x) ft and (5 - x) ft respectively. Sides of the cemented region are aligned with those of the grass field. What is the area of the field covered with grass?



A rectangular prism has length of (x + 8), width of (x - 4) and height of ($\frac{x}{5} - 9$). Write a polynomial to represent the volume of the prism.