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.
A function that has a variable under a radical sign.
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
"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