Not necessarily. If it is the same radical number, then the signs cancel out. Radical 5 times radical 5 equals 5. But if they are different, then you multiply the numbers and leave them under the radical sign.
Example: radical 5 * radical 6 = radical 30
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negative. When you multiply, if there are an odd number of negative signs, the answer is negative. If there are an even number of negative signs, the answer is positive. Or another way to think of this is that two negative signs cancel each other out when multiplying.
There are three steps on how to evaluate a radical. Some of the step-by-step instructions are multiply two radicals with the same index number by simply multiplying the numbers beneath the radicals, divide a radical by another radical with the same index number by simply dividing the numbers inside, and simplify large radicals using the product and quotient rules of radicals.
The power and the root cancel each other out and the result is the radicand (the number under the radical sign).
The product.
turn both fractions into decimals and then multiply!