Unit 3: Radicals

The simplest and most common radical is the square root. The square root function can be found on even the most basic calculator, and it is important in many real-life math applications. For example, in construction, square roots are used to determine side lengths of right triangles using the Pythagorean Theorem. Recall that in Unit 2, you used square roots to solve quadratic equations.

Another familiar radical, the cube root, is required to determine the length of the radius of a sphere or the side length of a cube when their volumes are known.

In Math 10C, you worked with exponents and radicals. In Unit 1 and Unit 2 of Math 20-1, you worked with exponents and basic square roots. In Unit 3, you are going investigate radicals by simplifying radical expressions and performing basic math operations with radicals, including addition, subtraction, multiplication, and division. Once these topics have been explored, you will use your new skills to solve radical equations that model real-world situations.