Respuesta :
If you are expanding the side length x+5 by a multiple of 4, your new side would look like this: 4(x+5) or, simplifying, 4x+20. The area of this new, bigger square would be found by squaring the 4x+20 to get 16x^2 + 160x + 400
The area of the expanded square deck is 16x² +400 + 160x.
It is given that
Side of original square deck = x+5
What is the area of a square?
The area of a square with side a is a².
So, area of original square deck = (x+5)²
Side of the expanded square deck = 4(x+5) = 4x+20
So, area of the expanded square deck = (4x+20)²
Area of the expanded square deck = 16x² +400 + 160x
Therefore, the area of the expanded square deck is 16x² +400 + 160x.
To get more about the square visit:
https://brainly.com/question/25092270