Answer:

Step-by-step explanation:
Use the square of a binomial theorem
= 
Now expand the given equation:

Hope this helps :)
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Answer:
21 & 22
42.25 ÷ 2 = 21.125.
21.125 rounded to the two nearest whole numbers is 21 and 22.
21 and 22 are the closest integers to 21.125.
The answer is 21 and 22.
Hope it helps!
Answer:
you can find angle E by
Step-by-step explanation:
sum of angles of traingle is 180 degree
I'm guessing the answer is B? I tried to isolate r and I got that result. Sorry if it's wrong!