Answer:
hello :
the perimeter is : p = 2(w + l )
p = 2(4.5+6) = 21 millim
You want to make sure to factor each equation as much as you can first.
So just focus on the numerator first.

To factor the numerator:

factor out an x

factor out the rest completely.
Now for the denominator:


factor out a -4

factor out the rest.
This leaves you with:

Then you can simplify:

I'm not sure what you're supposed to find exactly, so if you need more help you can ask me (:
Answer:
52 should be the answer
Step-by-step explanation:
first, love the parathesis. subtract 7-2
second 3 raised to the second power
third times 3 raised to the third power by 5 the answer a few u substrates 7-2
fourth 14 divide 2
finally I would add (14/2) 7 + 45 (which is 9 times 5)
read through it carefully by the end if the problem, you should have 52 as the ans