The method is based on the simple observation that, while x2+10xis not a perfect square, x2+ 10x+ 25 is. "Completing the square" means putting in the missing 25 that is needed to form the perfect square. Two obvious concerns are "How do you know you need 25? and "How can you just add 25 anyplace you want?" Here are the steps used:
A heading is similar to a caption, a line below a photograph that briefly explains it. Headings show up at the top of paragraphs, chapters, or pages, and they give you an idea of what the subject is. You might write a heading for each chapter of your novel, or on each page of your Spanish club newsletter.
It would be the third person pronoun. As you're speaking of him in the third person.
Answer:
The mood created by the author is suspenseful.