Anxiety Disorder Statistics. Anxiety Disorders affect 18.1 percent of adults in the United States (approximately 40 million adults between the ages of 18 to 54).
Perfect square. Perfect square is an element of algebraic structure which is equal to the square of another element. Square number, a perfect square integer.
To do this, see whether any perfect square is a factor of the radicand. If you cannot factor out a perfect square, your answer is already simplified and you need not do anything further. A perfect square is the result of multiplying an integer (a positive or negative whole number) by itself.