No. Sqrt(-4) contains a radical but it not irrational; it is imaginary.
Yes.
√ 5 is an irrational number. Any square root of a prime number is irrational.
No they are not. The numbers Pi and e are irrational and are not radicals. There are many others.
No. 4 over 4, or 1 whole, is not an irrational number. It can be written as a simple fraction, 4/4, so it is not an irrational number.
No. Sqrt(-4) contains a radical but it not irrational; it is imaginary.
Yes.
The square root (radical) of 5 is about 2.2361 (an irrational number)
√ 5 is an irrational number. Any square root of a prime number is irrational.
No. Radical(1.21) = 1.1, for example, is rational.
The root of an irrational doesn't have any specific name - radical pi is just radical pi, for example.
No they are not. The numbers Pi and e are irrational and are not radicals. There are many others.
Sqrt(4) is +/- 2 so it is rational, not irrational. The question, therefore, makes no sense.
If the symbol preceding the 61 is intended to be a radical sign, the answer is yes. If it is not a radical, it depends on the value of v.
No. 4 over 4, or 1 whole, is not an irrational number. It can be written as a simple fraction, 4/4, so it is not an irrational number.
no, because the root of a number that isn't a perfect square is irrational
If the value applied in the radical is not a perfect square, it is irrational. 25; 400; and 625 are perfect squares and are rational when applied in a radical.