In the given rectangle :
Length = (5x - 2) ft
Width = 2 ft
Area of rectangle is express as the product of length and width
Area of rectangle = Length x Width
Area of rectangle = (5x - 2) x 2
Simplify : (5x - 2) x 2 = 10x - 4
Area of rectangle = 10x - 4
Answer : Area of rectangle = 10x - 4