Answer:
√8·x + 4 > 20
Step-by-step explanation:
Area of Square lawn = 8·x feet²
Now, area of square = (side)²
⇒ Side length of square lawn = √8·x feet
Now, extended length of the lawn from both sides = 2 + 2 = 4 feet
Now, new side length of the square lawn = 8·x + 4
New area of the square lawn = (√8·x + 4)² square feet
Area of the brick purchased = 20 × 20
= (20)² square feet
Now, it is given Aroldo does not have enough feet of bricks
⇒ Area of bricks purchased is less than area of the square lawn with new dimensions
⇒ (√8·x + 4)² > (20)²
⇒ √8·x + 4 > 20