Question

Factor completely: x2 + 20x + 100
(x + 10)(x + 10)
(x + 2)(x + 10)
(x + 25)(x + 4)
(x + 4)(x + 5)

Answer 1

Here is a perfect square :D

Answer 2

\( \color{Black}{\Rightarrow x^2 + 10x + 10x + 100 }\)

Does that help?

Answer 3

We have only one perfect square in the options. How couldn't you guess that? :/