Theory:

The square root of a number:
 
The square root of a given positive real number is defined as the number multiplied with itself, results in the given number.
Example:
The square root of \(64\) is \(8\).
 
That is, \(\sqrt{64} = \sqrt{8 \times 8} = \sqrt{8^2} = 8\)
The square root of a polynomial:
 
The square root of a polynomial \(p(x)\) is defined as an expression \(q(x)\), when multiplied with itself, results in the given number \(p(x)\).
 
That is, \(p(x) = q(x) \times q(x)\)
So, \(\sqrt{p(x)} = |q(x)|\) where \(|q(x)|\) is the absolute of \(q(x)\).
 
The square root of a polynomial can be determined using two methods.
 
They are:
 
1. Factorization method
 
2. Long division method