Simplify the following rational expression and express in expanded form.

The solution for given expression is

Given that rational expression is:

Taking "4" as common term from denominator,

 ------- eqn 1

Let us use a algebraic identity which is as follows:

So, can be expressed as:

Substitute the above equation in eqn 1,

Cancelling (z + 2y) in numerator and denominator

Thus the solution for given expression is

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk