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Nate's client said she wanted the width [tex]\( w \)[/tex] of every room in her house plan increased by 2 feet and the length [tex]\( 2w \)[/tex] decreased by 5 feet. The polynomial [tex]\( (2w-5)(w+2) \)[/tex] or [tex]\( 2w^2 - w - 10 \)[/tex] gives the new area of any room in the house. The current width of the kitchen is 16 feet. What is the area of the new kitchen?

Sagot :

Let's solve this problem step-by-step to find the area of the new kitchen.

1. Understand the problem:
- The current width of the kitchen is \( w = 16 \) feet.
- The new width will be increased by 2 feet, resulting in \( w + 2 \).

2. Calculate the new width:
- New width = \( w + 2 \)
- Substitute \( w = 16 \):
[tex]\[ \text{New width} = 16 + 2 = 18 \text{ feet} \][/tex]

3. Calculate the new length:
- The new length will be \( 2w - 5 \).
- Substitute \( w = 16 \):
[tex]\[ \text{New length} = 2 \cdot 16 - 5 = 32 - 5 = 27 \text{ feet} \][/tex]

4. Calculate the new area:
- The new area is given by the product of the new length and the new width.
[tex]\[ \text{New area} = \text{New length} \times \text{New width} = 27 \text{ feet} \times 18 \text{ feet} \][/tex]

5. Perform the multiplication:
[tex]\[ \text{New area} = 27 \times 18 = 486 \text{ square feet} \][/tex]

Thus, the area of the new kitchen is [tex]\( 486 \)[/tex] square feet.