Determine the degree of each of the following polynomials :
 
i. \(4x^2+2x+2\) \(=\) 
 
ii. \(-9\) \(=\) 
 
iii. \(x^3 – 9x + 3x^5\)\(=\)
 
iv. \(y^2 (1 – y^4 )\)\(=\)