Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
Answer:
the answer is 2.34<2.43
Step-by-step explanation:
it is because 2.34 is less than 2.43
< means less than
> means greater than
= means equal to
Answer:
C.
Step-by-step explanation: im pretty sure because if you look at Ed its 5 and then if you add the same sides twice its 10 hopefully im right
I think this answers all the parts
Hope this helped :)