Multiplication of Radical Expression

To multiply radical expressions containing radicals, the product property of square roots is applied. That is, the nth root of a product is the product of the nth root.
If the factors containing radicals have different indices, transform the radicals into fractional exponents. Then change the fractional expressions into similar fractions. And then, transform to radical form and multiply. Simplify the result if necessary.

Consider the following links it may help you understand how to rewrite, simplify and add or subtract radicals.

Addition & Subtraction of Radical Expressions

Simplifying Radical Expressions

Rational Exponents & Radicals

Thank you!