Answer :
Answer:
Area of the rectangle = 3x² +2x-1
Perimeter of the rectangle = 8x
Step-by-step explanation:
Given
length = (3x - 1)
width = (x + 1)
Area of the rectangle= length * breadth
Area of the rectangle = (3x - 1) (x + 1)
= 3x²+ 3x - x-1
= 3x² +2x-1
Perimeter of the rectangle = 2( length + breadth)
= 2[(3x - 1) + (x + 1)]
= 2[3x - 1 + x + 1]
= 2[ 4x]
= 8x