adding and subtracting radicals problems

Let us try to solve adding and subtracting radicals problems.

Radical symbol (√), a symbol used to indicate the square root or nth root

The word "radical" means root

To indicate the nth root of a, the expression a^1/n is often used. The symbol √ is called the radical sign, and the nth root of a can also be shown as √a. The letter a is the radicand, and n a n is the index. The index 2 is generally omitted for square roots.

solved examples on radicals.
subtracting radicals
1) √6 - 4√6
Sol: √6 - 4√6
= (1-4) √6
= -3√6

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