Question

I don't understand this question, can you please help?

Answer 1

The question is:

Simplify.
(2a – 5)2


It seems simple, so I thought that the answer would simply be 2a - 25, but the answer choices are very strange.

A.
42a – 7 + 16

B.
4a2 – 25

C.
4a2– 20a + 10

D.
4a2 – 20a + 25

Answer 2

I don't understand how someone would get those answers

Answer 3

I believe it is C.

Answer 4

Sorry, I forgot to add that the 2 next to the 5 is an exponent. The 5 is sqaured.

Answer 5

How did you get the -20?