Adding And Subtracting Radical Expressions 2 Video Tutorial
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Expressions
An expression is a combination of numbers, operators, grouping symbols (such as brackets and parentheses) and/or free variables and bound variables arranged in a meaningful way which can be evaluated. Bound variables are assigned values within the expression (they are for internal use) while free variables can take on values from outside the expression.
Radicals
The radical symbol is used to indicate the nth root of a number.
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