The number under the radical sign (also known as the radical) is called the radican.
A number under a radical sign is known as a radicand.
False
the radical sign
Yes.
The radicand which is the name for the number that you are trying to solve the square root of.
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
A function that has a variable under a radical sign.
"Radical x times radical x" could be interpreted as the square root of x times the square root of x - in which case the product would be x (the number under the radical sign)
If you're asking about the grammar, then.. I think it's correct.
before
a surd . i suspect