Known: a rectangle area is 4A ^ 2-6a, its side length is 2A. Find the perimeter of the rectangle

Known: a rectangle area is 4A ^ 2-6a, its side length is 2A. Find the perimeter of the rectangle

Length of the other side = (4a & # 178; - 6a) △ 2A = 2a-3
The circumference of rectangle = 2 × (2a + 2a-3) = 8a-6