Question

perimeter of a rectangle is 8a² + 5ab - 4b² .if length of the rectangle is a² - 3ab + 4b².Find the breadth of the rectangle and the area of the rectangle​

Answer 1

Answer:

Step-by-step explanation:

perimeter of rectangle = 2 (length + breadth)

8a²+5ab-4b²=2(a²-3ab+4b²+breadth)

8a²+5ab-4b²=2(a²-3ab+4b²)+2(breadth)

8a²+5ab-4b²=2a²-6ab+8b²+2breath

8a²+5ab-4b²-(2a²-6ab+8b²)=2breath

8a²+5ab-4b²-2a²+6ab-8b²=2breath

8a²-2a²+5ab+6ab-4b²-8b²=2breath

6a²+11ab-12b²=2breath

6a²+11ab-12b²/2=breath

Answer 2

perimeter of rectangle = 2 (length + breadth)

8a2+5ab-4b2=2(a2-3ab+4b2+breadth) 8a2+5ab-4b2=2(a²-3ab+4b²)+2(breadth)

8a2+5ab-4b2=2a2-6ab+8b2+2breath

8a2+5ab-4b2-(2a2-6ab+8b2)=2breath

8a2+5ab-4b2-2a2+6ab-8b2=2breath 8a2-2a2+5ab+6ab-4b2-8b2=2breath

6a²+11ab-12b2=2breath

6a²+11ab-12b2/2=breath