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.
For example, 1, 4, and 9 are perfect squares.1 1 2, 4 2 2, and 9 3 2 You can use perfect squares to approximate a square root of a number. perfect square Checkpoint 5. Approximate 125 to the nearest whole number.Radical ExpressionsA is an expression that involvesa radical sign.