2x1 plus 2 x 24/4

please help

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with