← radical expressions Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All radicand the number inside the radical sign √ ← under the line. vinculum a horizontal line placed over a mathematical expression, used to indicate that it is to be considered a group index the number over the radical sign √ indicating the root of the radicand. root a number indicating the number of repetitive factors needed to obtain the radicand, ie. square root (xx) cube root (xxx). radical the check mark part of the radical expression, √ . roots vs radicals these terms are opposites and are used to solve equations or inequalities containing them. The square root of 9 is the opposite of 3 squared or (-3) squared. the sum of radical expressions can be obtained if and only if the radicands are the same. The product of a radical expressions can be obtained by multiplying the radicands of each radical expression. √(8) times √(2) =√(8)(2) = √16 = 4 simplifying radicals (square roots only) 1. divide the number inside the radical into two factors, one of which is a perfect square 2. square root the perfect square 3. leave the non-perfect square under the radical How can radical expressions be written without a radical sign? Change the root to a fraction with the root as the denominator and any exponents on a radicand as the numerator.