The two adjacent sides of a rectangle are 5x2 – 3y2 and x2 + 2xy. Find the perimeter.
We know that;
Two adjacent sides of a rectangle are l and b;
l = 5x2 – 3y2
b = x2 + 2xy
Perimeter of rectangle = (2l+2b)
Which is;
2 (5x2 – 3y2) + 2(x2 + 2xy)
= (10x2 – 6y2) + (2x2 + 4xy)