23 more than twice a number

Find the roots of the equation below. x^2 - 6 + 9 = 0

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?

What is the measure of one interior angle of a pentagon