Simplify Square Roots Using Conjugate - Grade 11

In this video, an expression with radicals is simplified following the steps: 1 - The numerator and the denominator are multiplied by the conjugate of the denominator 2 - the method of the product of the difference and sum of two numbers (a - b) (a + b) = a^2 - b^2 is used to simplify expressions including radicals (denoted here by sqrt ) of the form (a - sqrt b) (a + sqrt b) = a^2 - ( sqrt b )^2 = a^2 - b More grade 11 math practice at https://www.analyzemath.com/high_school_math/grade_11/grade-11-practice.html More math videos at https://www.analyzemath.com/math-videos.html. More math problems with solutions at https://www.analyzemath.com More grade 12 math practice at https://www.analyzemath.com/high_school_math/grade_12/grade-12-practice.html Subscribe to my channel to get more videos on math for all levels