Answer:
area = 12x² + 88x + 96
perimeter = 16x + 40
Step-by-step explanation:
Rectangle.
Length = 2x + 12
Width = 6x + 8
area = length × width
area = (2x + 12)(6x + 8)
area = 12x² + 16x + 72x + 96
area = 12x² + 88x + 96
perimeter = 2(length + width)
perimeter = 2(2x + 12 + 6x + 8)
perimeter = 2(8x + 20)
perimeter = 16x + 40
