The answer is D.
You cannot factorise it as there are two different terms being squared with the middle term containing both. Also, if you expand any of the brackets in the questions you will not get the original equation so non of them are right so it has to be D. :)
Answer:19.7
Step-by-step explanation:
Sin‐(7.5/22.3) on your calculator
The answer to 3 significant figures is 19.7
For X the answer would be..

Now for Y the answer would be..

Answer:
<h2>5 . 8</h2><h2 />
Step-by-step explanation:

I hope i am correct