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soldier1979 [14.2K]
3 years ago
13

A square has sides of length (2 a-b) metres. Write down an expression for the area of the square and simplify it​

Mathematics
1 answer:
Lorico [155]3 years ago
7 0

Answer:

A = 4a² - 4ab + b²

Step-by-step explanation:

The area (A) of a square is calculated as

A = s² ( s is the side length ) , so

A = (2a - b)² ← expand using FOIL

   = (2a)² - 2ab - 2ab + (- b)²

   = 4a² - 4ab + b²

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