Question

find the length of the rectangle when its breadth is ×- 2y and area is 3×^2 - 10xy + 8y^2 ​

Answer 1

Step-by-step explanation:

refer to the above attachment

Answer 2

Answer:

As we know the lengths of opposite sides are equal,

Hence,

2x+y+8=4x-y

2y+8=2x

y+4=x - - - - - eq i

Similarly, for breadth,

2y=x+4 - - - - - - - - - eq ii

Solving eq i and ii we get,

y=8 and x=12

Now,

Length =4x-y

=40

Breadth=2y

=16

Perimeter =2(length +breadth)

=112 unit

Area=length * breadth

=40*16=640 square unit