Find the Maclaurin series for f(x) using the definition of a Maclaurin series. [Assume that f has a power series expansion.] f(x)

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm