The large rectangle is 3 times 6 but theres two so its 2 x 3 x 6
the medium rectangle is 2 times 6 but again there is two so 2 x 2 x 6
the small rectangle is 2 times 3 and once more there is two so 2 x 2 x 3
The value of the expression
is 
<h3>How to evaluate the sum?</h3>
The attachment represents the proper format of the question
The summation expression is given as:

Expand the radicands

Evaluate the square roots

Add the like terms

Hence, the value of the expression
is 
Read more about expressions at:
brainly.com/question/723406
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Answer:
x = 0
Step-by-step explanation:
It’s 22/3 I think so that’s the answer