The area of a square park is $16x^2 + 8x + 1$. What is the length of the park?

(4x - 1) units (4x + 1) units (4x + 1)2 units 4x units

(4x + 1) units

The area of park = 16x2 + 8x + 1 16x2 + 8x + 1 = 0 = (4x)2 + 2 × 4x + (1)2  = (4x + 1)2  Now, Area of square = (Side)2 = Length of park = (4x + 1)