1. The document provides an overview of roots and radicals, including definitions of square roots, principal and negative square roots, radical expressions, rational and irrational numbers, and methods for simplifying, adding, subtracting, multiplying, dividing, and rationalizing radicals. 2. Square roots are factors whose product is the radicand, and the principal square root is the positive root. Radicals indicate roots and have a radicand and index. Rational numbers can be expressed as ratios while irrational numbers cannot. 3. Graphs and tables can be used to find approximate square roots. Radicals can be simplified using properties of exponents and fractions. Radical equations are solved by isolating the radical and taking squares of both