Question

two adjacent sides of a rectangle are 3x -5y and 7x - xy. Find its perimeter

Answer 1

2(l+b)
2 (3x-5y+7x-xy)
2(10x-5y-xy)
20x-10y-2xy

Answer 2

Answer:

20x^2-10y^2-2xy

Step-by-step explanation:

perimeter:2(l+b)

2(3x^2-5y^2+7x^2-xy)

2(10x^2-5y^2-xy)

20x^2-10y^2-2xy