The simplified form of the expression is 
<h3>Simplifying an expression</h3>
From the question, we are to simplify the given expression
The given expression is

The expression can be simplified as shown below





Then,





Hence, the simplified form of the expression is 
Learn more on Simplifying an expression here: brainly.com/question/2320607
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Ok soo the answer for part A is 714 euros B idk
Um im guessing 60 +4 or sixty four
Answer:
the answer for y is 9 and x is 9✔2( the check is square root symbol)
A ) P=6n+18 where N is the number of triangles. There's always two '9's and the 6 is based on how many triangles there are.