Question

The area of a square with side (2m + 5) unit is _______Sq. unit
4m² + 25
4m² − 25
4m² + 20m + 25
4m² − 20m + 25

Answer 1

Answer:

The answer will be

4m2 + 20m +25

Answer 2

Here the side of the square is given to be (2m + 5)

We have to find the area of the square

Area = side × side

        = (2m + 5) × (2m + 5)

        = (2m + 5)²

Here we will use the identity

(a + b)² = a² + b² + 2ab

(2m + 5)² = (2m)² + 5² + 2(2m)(5)

               = 4m² + 25 + 20m

Hence, the correct answer will be 4m² + 25 + 20m